diff --git a/.gitignore b/.gitignore
index badbc02f6..8e0eafdd1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 _site
 .sass-cache
+.idea/*
diff --git a/README.md b/README.md
index 9c73a404d..29c778956 100755
--- a/README.md
+++ b/README.md
@@ -1,63 +1,105 @@
-# Workshop Guestbook 📓
+# DevFest Seoul 2019 방명록 🥳
 
-Hey welcome to this workshops guestbook! By signing this guestbook we will explore many of the core concepts of GitHub. 
-By the end of this workshop you will have forked a repo, created a commit, made a pull request and signed your name on the guestbook.
+안녕하세요! Commit and Candy 액티비티에 오신것을 환영합니다!<br />개발자들의 축제인만큼 재밌는 Commit을 날려보지 않겠어요?
 
-# Signing the guestbook
+아래 설명을 차근차근 따라오시다보면 PR(Pull Request)도 어렵지 않아요!<br />여러분이 작성한 PR이 `merge` 되면, GDG Seoul Github pages에 인사말이 등록됩니다.
 
-## Using GitHub.com
 
-### Forks
 
-GitHub let's you adapt any piblic repository using forks. Forks copy the entire repository to your profile so that you have ownership and 
-controll. This let's you add features to a project without needing to request direct access to a repository.
+### 방명록 양식 (미리 복사해주세요!)
 
-Let's fork this repository to get started:
+- 프로필 url이 없을 경우 https://avatar.tobi.sh/tobiaslins.svg?text=GDG 좌측 parameter에 본인의 이니셜로 변경해주세요.
+  - 예시)`https://avatar.tobi.sh/tobiaslins.svg?text=DY`
+- emoji 필드는 여기에서 찾아 복사 붙여넣기 해주세요 (키보드의 기본 이모지를 사용하셔도 됩니다.) 👉 [emojipedia.org](https://emojipedia.org/)
+- SNS 계정은 아이디(@이하 메일 제외)만 적어주시면 됩니다. 예시) cdy0510
+
+```
+---
+name: {{이름}}
+image: {{프로필 사진 url}}
+emoji: 🥳
+message: {{인사말}}
+facebook: {{계정 아이디 / 없으면 해당 라인 삭제하셔도 됩니다.}}
+twitter: {{계정 아이디 / 없으면 해당 라인 삭제하셔도 됩니다.}}
+github: {{계정 아이디 / 없으면 해당 라인 삭제하셔도 됩니다.}}
+---
+```
+
+
+
+# 📝 방명록 등록하기
+
+## GitHub.com을 사용합니다.
+
+### 1. Fork 하기
+
+우선 PR을 하기 위해 현재 repository(이하 저장소)를 자신의 계정으로 포크 해주세요. Fork는 현재 저장소를 자신의 저장소로 전체 복사하는 것을 의미합니다. Fork한 저장소는 본인 계정의 저장소가 되어 직접 소스를 관리할 수 있습니다. 이를 통해 원래 저장소에 직접 액세스 할 필요 없이 프로젝트에 기능을 추가 할 수 있습니다.
+
+그럼, 이 저장소를 Fork하는 것으로 시작해볼까요?
 
 ![fork](.github/images/fork.gif)
 
-### Making a change
+[![Inline docs](https://githubbadges.com/fork.svg?user=GDG-Seoul&repo=DevFest-Seoul-2019-guestbook)](https://github.com/GDG-Seoul/DevFest-Seoul-2019-guestbook/fork)
 
-The repository will now exist as a seperate repository under your GitHub profile. From your fork go to the `/_guestbook` folder and click on **Create new file**. 
-Name this file **yourname.yaml**. Then paste the bellow template into your file and replace it with your details. You can delete any fields you dont want to fill except *name* and *image*
+위 버튼을 눌러 포크하기
+
+
+
+### 2. 변경 사항 만들기(방명록 추가하기)
+
+저장소는 이제 GitHub 프로필 아래에 별도의 저장소로 존재합니다.
+
+포크에서 `/ _guestbook` 폴더로 가서 **Create new file**을 클릭해 새 파일을 만들어주세요.
+이 파일 이름을 **{yourname}.yaml**로 해주세요. 그런 다음 아래 양식을 파일에 붙여 넣고 자신의 정보로 바꿉니다. *name* 및 *image*를 제외하고 필요하지 않은 필드는 삭제할 수 있습니다.
 
 ```
 ---
-name: Pandelis
-image: https://avatar.tobi.sh/tobiaslins.svg?text=PZ
-emoji: 🐼
-message: Hey! I hope you're enjoying the workshop.
-twitter: PandelisZ
-github: PandelisZ
+name: 조다영
+image: https://avatar.tobi.sh/tobiaslins.svg?text=DY
+emoji: 🥳
+message: 안녕하세요! GDG Seoul 최고!
+facebook: cdy0510
+twitter: 
+github: cdy0510
 ---
 ```
 
 ![fork](.github/images/createfile.gif)
 
-> If you don't wish to use a photo of yourself leve the placeholder image and add your initials as `?text=PZ` for example.
+> 자신의 사진을 사용하지 않으려면 https://avatar.tobi.sh/tobiaslins.svg 에 parameter로 이니셜을 추가해주세요. `?text=DY`
+
+> emoji 필드는 여기에서 찾아 복사 붙여넣기 해주세요(키보드의 기본 이모지를 사용하셔도 됩니다.) 👉 [emojipedia.org](https://emojipedia.org/) 
 
-> You can find your favorite emoji at [emojipedia.org](https://emojipedia.org/) and paste it into the emoji field
 
-### Commiting
 
-At the bottom of the new file page you'll be able to submit this change as a **commit**. Scroll to the bottom of the page and enter the commit details. 
-Commit messages should be short and descriptive so that others can tell what you're changing or adding.
+### 3. Commit하기
+
+새 파일 만들기 페이지에서 이제 수정된 내용을 `commit`할 수 있습니다. 페이지 하단에서 커밋 세부 내용을 채워주시고, **Commit new file** 버튼을 클릭해주세요.
+커밋 메시지는 짧고 구체적이어야 다른 사람들이 변경하거나 추가 한 내용을 알 수 있습니다.
 
 ![commit](.github/images/commit.gif)
 
 
-### Submitting a pull requst
 
-Now that you have made your desired changes to the repo you can submit them **upstream** (the original repository). The way we do this within the [GitHub flow](https://guides.github.com/introduction/flow/) is by creating a pull request on the upstream repository. In this case the upstream repository is the original repository you 
-forked. This is shown on your repo as **forked from:** at the top of the repository page.
+### 4. PR(Pull request) 제출하기
+
+원하는 내용을 변경 했으므로 **upstream** (원래 저장소)에 PR을 제출할 수 있습니다. [GitHub Flow](https://guides.github.com/introduction/flow/)
+upstream에 PR을 제출하면 내 코드를 반영할 수 있습니다. 
+
+upstream이란, 내가 fork했던 원래 저장소를 의미합니다.
 
-To submit a pull request navigate to the original upstream repository and go to the **Pull requests** tab and click **New pull request**. If GitHub does not automatically detect
-your fork you can click on *compare across forks*. Then create the pull reqeust
+내 저장소 페이지에서 저장소 이름 아래를 보면 **forked from :** 으로 표시됩니다.<br />PR을 제출하려면 **Pull request** 탭을 누르고, **New pull request** 버튼을 누르세요.
+
+GitHub가 자동으로 감지하지 못하는 경우 *compare across forks*를 클릭해주세요. 그 다음 PR을 생성하세요.
+
+base repository는 GDG Seoul의 저장소가 될 것이고, head repository는 자신이 수정한 저장소의 브랜치가 될 것입니다.
+PR은 `master` 쪽으로 제출해주시면 됩니다.
 
 ![pull request](.github/images/pullrequest.gif)
 
 
-### Congrats :tada:
 
-You've sucessfully creted a pull request! You're changes will now have to be reviewed. If you're filled out your details correctly your pull request will be approved and you will show up on the 
-guestbook.
+### 축하합니다!! :tada:
+
+여러분은 성공적으로 PR을 제출하셨습니다!! 
+방명록을 올바르게 입력하셨다면, 담당자가 PR을 승인하고 곧 페이지에 표시될 것입니다.
diff --git a/_config.yml b/_config.yml
index d86697dc2..55d34d485 100755
--- a/_config.yml
+++ b/_config.yml
@@ -6,5 +6,5 @@ collections:
   - guestbook
 
 workshop:
-  name: 
-  github: https://github.com/PandelisZ/workshop-guestbook
+  name: DevFest Seoul 2019
+  github: https://github.com/GDG-Seoul/DevFest-Seoul-2019-guestbook
diff --git a/_guestbook/JieunJang.yaml b/_guestbook/JieunJang.yaml
new file mode 100644
index 000000000..f6a5bd99a
--- /dev/null
+++ b/_guestbook/JieunJang.yaml
@@ -0,0 +1,10 @@
+--- 
+name: 장지은
+image: https://avatar.tobi.sh/tobiaslins.svg?text=JE 
+emoji: 🙃 
+message: 안녕하세요 :) 처음참가합니다 설레네요😘
+facebook: 
+twitter: 
+instagram : __jeun__
+github: comghana
+---
diff --git a/_guestbook/Leesangik.yaml b/_guestbook/Leesangik.yaml
new file mode 100644
index 000000000..f634b1f8f
--- /dev/null
+++ b/_guestbook/Leesangik.yaml
@@ -0,0 +1,7 @@
+---
+name: 이상익
+image: https://avatar.tobi.sh/tobiaslins.svg?text=lsi
+emoji: 🥳 
+message: 안녕하세요!!
+github: devstar1224
+---
diff --git a/_guestbook/MiNa.yaml b/_guestbook/MiNa.yaml
new file mode 100644
index 000000000..55f77a327
--- /dev/null
+++ b/_guestbook/MiNa.yaml
@@ -0,0 +1,6 @@
+---
+name: Mina Kim
+image: https://avatar.tobi.sh/tobiaslins.svg?text=MiNa
+emoji: 😍
+message: 첫 참석인데 재밌어요!!👍👍👍
+---
diff --git a/_guestbook/SambaLim.yaml b/_guestbook/SambaLim.yaml
new file mode 100644
index 000000000..23263e6f0
--- /dev/null
+++ b/_guestbook/SambaLim.yaml
@@ -0,0 +1,9 @@
+--- 
+name: 임성호
+image: https://avatar.tobi.sh/tobiaslins.svg?text=Samba
+emoji: 😁
+message: 올한해도 감사했습니다! GDG Seoul 최고!
+facebook: limsungho07
+twitter: 
+github: SambaLim
+---
diff --git a/_guestbook/SoohyeonPark b/_guestbook/SoohyeonPark
new file mode 100644
index 000000000..d9bb76db7
--- /dev/null
+++ b/_guestbook/SoohyeonPark
@@ -0,0 +1,8 @@
+--- 
+name: 박수현
+image: https://avatar.tobi.sh/tobiaslins.svg?text=PSH
+emoji: 🥳 
+message: 안녕하세요~~
+facebook: soohyeon317
+github: soohyeon317
+---
diff --git a/_guestbook/WooyoungChoi.yaml b/_guestbook/WooyoungChoi.yaml
new file mode 100644
index 000000000..fccde6dd9
--- /dev/null
+++ b/_guestbook/WooyoungChoi.yaml
@@ -0,0 +1,7 @@
+---
+name: Choi Wooyoung
+image: https://avatar.tobi.sh/tobiaslins.svg?text=WY
+emoji: 😎
+message: Happy Devfest~^^
+github: ulgoon
+---
diff --git a/_guestbook/beomjun.yaml b/_guestbook/beomjun.yaml
new file mode 100644
index 000000000..1c4a0f334
--- /dev/null
+++ b/_guestbook/beomjun.yaml
@@ -0,0 +1,8 @@
+---
+name: 길범준
+image: https://avatar.tobi.sh/tobiaslins.svg?text=GBJ
+emoji: 🦆
+message: 반가워요 DEVFEST! 다들 뜻깊은 시간 보내고 갑시다! (스캐터랩 전직군 개발자 채용중...! 읍읍)
+facebook: katter.gil
+github: kattergil
+---
diff --git a/_guestbook/dahee.yaml b/_guestbook/dahee.yaml
new file mode 100644
index 000000000..b92f21a37
--- /dev/null
+++ b/_guestbook/dahee.yaml
@@ -0,0 +1,8 @@
+---
+name: 황다희
+image: https://avatar.tobi.sh/tobiaslins.svg?text=DH
+emoji: 😻
+message: 안녕하세요!! DEVFEST 대박💓
+facebook: dahee522
+github: dahee90522
+---
diff --git a/_guestbook/dayoung.yaml b/_guestbook/dayoung.yaml
new file mode 100644
index 000000000..be8473b95
--- /dev/null
+++ b/_guestbook/dayoung.yaml
@@ -0,0 +1,8 @@
+---
+name: Dayoung Cho
+image: https://avatars1.githubusercontent.com/u/15723999?s=460&v=4
+emoji: 🥳
+message: DevFest Seoul에 오신것을 환영합니다! GDG Seoul 많이 사랑해주세요!!
+facebook: cdy0510
+github: cdy0510
+---
diff --git a/_guestbook/geongbeen.yaml b/_guestbook/geongbeen.yaml
new file mode 100644
index 000000000..5ede5bb26
--- /dev/null
+++ b/_guestbook/geongbeen.yaml
@@ -0,0 +1,7 @@
+---
+name: 민경빈
+image: https://avatar.tobi.sh/tobiaslins.svg?text=GB
+emoji: 🥳
+message: 안녕하세요! GDG Seoul 최고!
+github: mango906
+---
diff --git a/_guestbook/gyeongseon.yaml b/_guestbook/gyeongseon.yaml
new file mode 100644
index 000000000..2b082c6d0
--- /dev/null
+++ b/_guestbook/gyeongseon.yaml
@@ -0,0 +1,9 @@
+---
+name: 박경선
+image: https://avatar.tobi.sh/tobiaslins.svg?text=GNGSN
+emoji: 🥰
+message: GDG 오게 되어서 너무 좋아요❗️ 모두 만나서 반갑습니당 ☺️
+facebook: rudtjs4540
+instagram : pppppppppark
+github: gngsn
+---
diff --git a/_guestbook/haenara.yaml b/_guestbook/haenara.yaml
new file mode 100644
index 000000000..b63c1389a
--- /dev/null
+++ b/_guestbook/haenara.yaml
@@ -0,0 +1,8 @@
+---
+name: 신해나라
+image: http://avatar.tobi.sh/tobiaslins.svg?text=%EC%8B%A0%ED%95%B4%EB%82%98%EB%9D%BC
+emoji: 🤖
+message: DevFest라는 이름 답게 축제처럼 즐길 수 있는 액티비티가 많아서 즐겁네요!
+facebook: haenala.shin
+github: HaenaraShin
+---
diff --git a/_guestbook/haesunpark.yaml b/_guestbook/haesunpark.yaml
new file mode 100644
index 000000000..37bb5db33
--- /dev/null
+++ b/_guestbook/haesunpark.yaml
@@ -0,0 +1,10 @@
+
+---
+name: 박해선
+image: https://avatar.tobi.sh/tobiaslins.svg?text=HS
+emoji: 🔥
+message: 안녕하세요! GDG Seoul 최고!
+facebook: haesunrpark
+twitter: 
+github: rickiepark
+---
diff --git a/_guestbook/hyeongjin.yaml b/_guestbook/hyeongjin.yaml
new file mode 100644
index 000000000..b1483d690
--- /dev/null
+++ b/_guestbook/hyeongjin.yaml
@@ -0,0 +1,7 @@
+---
+name: 전형진
+image: https://avatar.tobi.sh/tobiaslins.svg?text=HJ
+emoji: 🐽
+message: Hello, World!
+github: Logqwerty
+---
diff --git a/_guestbook/hyeongyulee.yaml b/_guestbook/hyeongyulee.yaml
new file mode 100644
index 000000000..db898a0f7
--- /dev/null
+++ b/_guestbook/hyeongyulee.yaml
@@ -0,0 +1,8 @@
+---
+name: 이현규
+image: https://avatars1.githubusercontent.com/u/4777069?s=460&v=4
+emoji: 📷
+message: 안녕하세요~ 모두 즐거운 Devfest되세요~
+facebook: vazrupe
+github: vazrupe
+---
diff --git a/_guestbook/imjmo.yaml b/_guestbook/imjmo.yaml
new file mode 100644
index 000000000..d3a0e61b5
--- /dev/null
+++ b/_guestbook/imjmo.yaml
@@ -0,0 +1,9 @@
+---
+name: 심규환
+image: https://avatar.tobi.sh/tobiaslins.svg?text=anthony.shim
+emoji: 🥳
+message: 안녕하세요! GDG Seoul 최고!
+facebook: imjmo
+twitter: 
+github: anthony.shim
+---
diff --git a/_guestbook/jakeyoo.yaml b/_guestbook/jakeyoo.yaml
new file mode 100644
index 000000000..fbc64f9d5
--- /dev/null
+++ b/_guestbook/jakeyoo.yaml
@@ -0,0 +1,11 @@
+---
+
+name: Jake Yoon
+image: https://avatars3.githubusercontent.com/u/4569945?s=400&u=036b0831954657a4f84410a487caeb853b7f9fd5&v=4
+emoji: 🔥
+message: GDG DevFest Seoul 준비하느라 수고하셨습니다!! GDG DevFest Suwon도 많은 참여바래요!! https://festa.io/events/623
+facebook: yjaeseok
+twitter: GdgSuwon
+github: yjaeseok
+
+---
diff --git a/_guestbook/jay.yaml b/_guestbook/jay.yaml
new file mode 100644
index 000000000..0419c3046
--- /dev/null
+++ b/_guestbook/jay.yaml
@@ -0,0 +1,7 @@
+---
+name: 이재범
+image: https://avatar.tobi.sh/tobiaslins.svg?text=Jay
+emoji: 👨🏽‍💻
+message: 아티스츠카드에서 개발자를 찾고 있습니다!
+github: jaebeomlee
+---
diff --git a/_guestbook/jehaShin.yaml b/_guestbook/jehaShin.yaml
new file mode 100644
index 000000000..dc1bbb6e3
--- /dev/null
+++ b/_guestbook/jehaShin.yaml
@@ -0,0 +1,7 @@
+---
+name: 신제하
+image: https://avatars1.githubusercontent.com/u/51507716?s=460&v=4
+emoji: 😀😀😀😀😀😀
+message: 안녕하세요. 재밌게 듣고 갈라고요 :)
+github: underthetitle@gmail.com
+---
diff --git a/_guestbook/jihunchoi.yaml b/_guestbook/jihunchoi.yaml
new file mode 100644
index 000000000..ff3794c7b
--- /dev/null
+++ b/_guestbook/jihunchoi.yaml
@@ -0,0 +1,7 @@
+--- 
+name: 최지훈 
+image: https://avatar.tobi.sh/tobiaslins.svg?text=JH 
+emoji: 🥳 
+message: 안녕하세요! GDG Seoul 최고!
+github: gemini10244
+---
diff --git a/_guestbook/jinnybrain.yaml b/_guestbook/jinnybrain.yaml
new file mode 100644
index 000000000..d3e686c61
--- /dev/null
+++ b/_guestbook/jinnybrain.yaml
@@ -0,0 +1,9 @@
+---
+name: 이현진
+image: https://avatar.tobi.sh/tobiaslins.svg?text=HJLEE
+emoji: 🥳
+message: 안녕하세요! 올 해도 즐거운 뎁페 기대합니다
+facebook: jinnybrain
+twitter: 
+github: 
+---
diff --git a/_guestbook/jisookim.yaml b/_guestbook/jisookim.yaml
new file mode 100644
index 000000000..61c95283b
--- /dev/null
+++ b/_guestbook/jisookim.yaml
@@ -0,0 +1,8 @@
+---
+name: Jisoo Kim
+image: https://avatar.tobi.sh/tobiaslins.svg?text=JS
+emoji: 🤣
+message: 데브페스트 많이 기대됩니다! 재밌을 것 같아요!!!
+facebook:
+github: kuotient.dev
+---
diff --git a/_guestbook/jiyeonlee.yaml b/_guestbook/jiyeonlee.yaml
new file mode 100644
index 000000000..73da69214
--- /dev/null
+++ b/_guestbook/jiyeonlee.yaml
@@ -0,0 +1,8 @@
+---
+name: 이지연
+image: https://scontent-sjc3-1.cdninstagram.com/v/t51.2885-15/e35/c0.180.1440.1440a/s320x320/70706048_955655724783558_3812497492550589386_n.jpg?_nc_ht=scontent-sjc3-1.cdninstagram.com&_nc_cat=106&oh=7468148333de21b83b10f82c1d3944aa&oe=5E1AE748&ig_cache_key=MjE0NTExMDAwNDAwOTk5MzA0MA%3D%3D.2.c
+emoji: 🥳
+message: GDG Seoul 최고~~~~~~ 
+facebook: i3048i
+github: jiyeoon
+---
diff --git a/_guestbook/junil.yaml b/_guestbook/junil.yaml
new file mode 100644
index 000000000..451c41aa2
--- /dev/null
+++ b/_guestbook/junil.yaml
@@ -0,0 +1,9 @@
+---
+name: 김준일
+image: https://avatar.tobi.sh/tobiaslins.svg?text=JI
+emoji: 🥳
+message: 반가워요! GDG Seoul 화이팅!!
+facebook: 
+twitter: 
+github: kimjunil
+---
diff --git a/_guestbook/jyk.yaml b/_guestbook/jyk.yaml
new file mode 100644
index 000000000..c986cb392
--- /dev/null
+++ b/_guestbook/jyk.yaml
@@ -0,0 +1,7 @@
+---
+name: 김진영
+image: https://avatar.tobi.sh/tobiaslins.svg?text=jyk
+emoji: 🥳
+message: 안녕하세요! GDG Seoul 출첵~
+github: cocoon1274
+---
diff --git a/_guestbook/neulbo27.yaml b/_guestbook/neulbo27.yaml
new file mode 100644
index 000000000..c2580c882
--- /dev/null
+++ b/_guestbook/neulbo27.yaml
@@ -0,0 +1,7 @@
+---
+name: 이한규
+image: https://avatar.tobi.sh/tobiaslins.svg?text=HK
+emoji: 👍
+message: DevFest 2019 Seoul 참석합니다!
+github: neulbo27
+---
\ No newline at end of file
diff --git a/_guestbook/pandelis.yaml b/_guestbook/pandelis.yaml
deleted file mode 100644
index 858c5203a..000000000
--- a/_guestbook/pandelis.yaml
+++ /dev/null
@@ -1,8 +0,0 @@
----
-name: Pandelis
-image: https://avatars2.githubusercontent.com/u/8436717?s=460&v=4
-emoji: 🐼
-message: Hey! I hope you're enjoying the workshop.
-twitter: PandelisZ
-github: PandelisZ
----
diff --git a/_guestbook/ryan.yaml b/_guestbook/ryan.yaml
new file mode 100644
index 000000000..d7507abb0
--- /dev/null
+++ b/_guestbook/ryan.yaml
@@ -0,0 +1,7 @@
+---
+name: 강현석
+image: https://avatar.tobi.sh/tobiaslins.svg
+emoji: 🥳
+message: 반갑습니다.
+github: BeokBeok
+---
diff --git a/_guestbook/seongwon-kang.yaml b/_guestbook/seongwon-kang.yaml
new file mode 100644
index 000000000..ab57663a7
--- /dev/null
+++ b/_guestbook/seongwon-kang.yaml
@@ -0,0 +1,7 @@
+name: Seongwon Kang
+image: https://avatars1.githubusercontent.com/u/15723999?s=460&v=4
+emoji: 🥳
+message: GDG Seoul 화이팅!
+facebook: abc7988se
+github: Hardplant
+---
diff --git a/_guestbook/seunghyun.yaml b/_guestbook/seunghyun.yaml
new file mode 100644
index 000000000..62334fb54
--- /dev/null
+++ b/_guestbook/seunghyun.yaml
@@ -0,0 +1,7 @@
+---
+name: 이승현
+image: https://avatar.tobi.sh/tobiaslins.svg?text=isbee
+emoji: 📍
+message: 처음와본 GDG Seoul. 좋은 경험이 된 것 같습니다!
+github: isbee
+---
diff --git a/_guestbook/shinye.yaml b/_guestbook/shinye.yaml
new file mode 100644
index 000000000..a94346546
--- /dev/null
+++ b/_guestbook/shinye.yaml
@@ -0,0 +1,8 @@
+---
+name: Shinye Song
+image: https://avatars0.githubusercontent.com/u/10671079?s=460&v=4
+emoji: ⚾️
+message: 즐거운 DevFest! 모두 즐거운 시간 되시면 좋겠어요 <3 (키움히어로즈 한국시리즈 화이팅!ㅎㅎㅋ)
+facebook: iamsysong
+github: Shinye
+---
diff --git a/_guestbook/skile.yaml b/_guestbook/skile.yaml
new file mode 100644
index 000000000..b026d6878
--- /dev/null
+++ b/_guestbook/skile.yaml
@@ -0,0 +1,5 @@
+name: 이정민
+image: https://avatar.tobi.sh/tobiaslins.svg?text=JM
+emoji: 🎈
+message: Devfest 처음 와 보는데 설레네요! 잘 즐기다 갈게요~
+github: GBS-Skile
diff --git a/_guestbook/soohyeon.yaml b/_guestbook/soohyeon.yaml
new file mode 100644
index 000000000..0da5d0f1a
--- /dev/null
+++ b/_guestbook/soohyeon.yaml
@@ -0,0 +1,7 @@
+---
+name: 이수현
+image: https://avatar.tobi.sh/tobiaslins.svg?text=SH
+emoji: 🥳
+message: 좋은 분들이 많으신 것 같아요!
+github: soohyeonlee
+---
diff --git a/_guestbook/soojung.yaml b/_guestbook/soojung.yaml
new file mode 100644
index 000000000..08110e7df
--- /dev/null
+++ b/_guestbook/soojung.yaml
@@ -0,0 +1,8 @@
+--- 
+name: 채수정
+image: https://avatar.tobi.sh/tobiaslins.svg?text=SJ
+emoji: 🥳 
+message: 안녕하세요~
+facebook: https://facebook.com/soojung.chae.3
+github: https://github.com/SooJungChae
+---
diff --git a/_guestbook/space.yaml b/_guestbook/space.yaml
new file mode 100644
index 000000000..eef86da28
--- /dev/null
+++ b/_guestbook/space.yaml
@@ -0,0 +1,10 @@
+
+---
+name: 채우주
+image: https://avatar.tobi.sh/tobiaslins.svg?text=HS
+emoji: 🔥
+message: 안녕하세요! GDG!!
+facebook: spacechae
+twitter: 
+github: enaenen
+---
diff --git a/_guestbook/startergate.yaml b/_guestbook/startergate.yaml
new file mode 100644
index 000000000..3bc9bb110
--- /dev/null
+++ b/_guestbook/startergate.yaml
@@ -0,0 +1,8 @@
+---
+name: Hoseung Choi
+image: https://avatars0.githubusercontent.com/u/32726809?s=460&v=4
+emoji: 🤡
+message: 내 월급이 내 코딩 실력보다 더 가취있기를
+facebook: startergate
+github: startergate
+---
diff --git a/_guestbook/sumin-choi.yaml b/_guestbook/sumin-choi.yaml
new file mode 100644
index 000000000..83ffd19ee
--- /dev/null
+++ b/_guestbook/sumin-choi.yaml
@@ -0,0 +1,9 @@
+---
+name: 최수민
+image: https://avatar.tobi.sh/tobiaslins.svg?text=SM
+emoji: 🥳
+message: React Flutter 좋아요
+facebook: jerry1267
+twitter: 
+github: orange-mush
+---
diff --git a/_guestbook/sungwook.yaml b/_guestbook/sungwook.yaml
new file mode 100644
index 000000000..2590559aa
--- /dev/null
+++ b/_guestbook/sungwook.yaml
@@ -0,0 +1,9 @@
+---
+name: 최성욱
+image: https://avatar.tobi.sh/tobiaslins.svg?text=SW
+emoji: 😃
+message: DevFest 잘 즐기다 가겠습니다~
+facebook:
+twitter:
+github: noname2048
+---
diff --git a/_guestbook/wisemuji.yaml b/_guestbook/wisemuji.yaml
new file mode 100644
index 000000000..407a874be
--- /dev/null
+++ b/_guestbook/wisemuji.yaml
@@ -0,0 +1,7 @@
+---
+name: 김수현
+image: https://avatar.tobi.sh/tobiaslins.svg?text=KSH
+emoji: 🌸
+message: DevFest Seoul 2019 정말 기대됩니다^^
+github: wisemuji
+---
diff --git a/_guestbook/wone2287.yaml b/_guestbook/wone2287.yaml
new file mode 100644
index 000000000..d11f0205f
--- /dev/null
+++ b/_guestbook/wone2287.yaml
@@ -0,0 +1,9 @@
+---
+name: Heo Won
+image: https://avatars2.githubusercontent.com/u/25315898?s=460&v=4
+emoji: 😮
+message: DevFest!! 모두 즐거운 시간 되세요.!!
+facebook: 
+twitter:
+github: wone2287
+---
diff --git a/_guestbook/woosik.yaml b/_guestbook/woosik.yaml
new file mode 100644
index 000000000..7ed5e6bc9
--- /dev/null
+++ b/_guestbook/woosik.yaml
@@ -0,0 +1,7 @@
+--- 
+name: 윤우식
+image: https://avatar.tobi.sh/tobiaslins.svg?text=WS 
+emoji: 🐥 
+message: 반갑습니다! GDG Seoul 화이팅! 
+github: suites 
+---
diff --git a/_guestbook/wwwYoungmin.yaml b/_guestbook/wwwYoungmin.yaml
new file mode 100644
index 000000000..3825217a9
--- /dev/null
+++ b/_guestbook/wwwYoungmin.yaml
@@ -0,0 +1,7 @@
+---
+name: 우영민
+image: https://avatar.tobi.sh/tobiaslins.svg?text=YM
+emoji: 😳
+message: GDG Seoul 화이팅!
+github: wwwYoungmin
+---
diff --git a/_guestbook/yebin.yaml b/_guestbook/yebin.yaml
new file mode 100644
index 000000000..a858016f4
--- /dev/null
+++ b/_guestbook/yebin.yaml
@@ -0,0 +1,8 @@
+---
+name: 김예빈
+image: https://avatars2.githubusercontent.com/u/43260722?s=460&v=4
+emoji: 🦄
+message: 저는 체크인 부스에 있습니다🥰 재미있는 행사 되세요!!!
+facebook: 100009499396226
+github: girincute
+---
diff --git a/_guestbook/yeonheehan.yaml b/_guestbook/yeonheehan.yaml
new file mode 100644
index 000000000..709aea326
--- /dev/null
+++ b/_guestbook/yeonheehan.yaml
@@ -0,0 +1,8 @@
+---
+name: 한연희
+image: https://avatars3.githubusercontent.com/u/33242880?s=460&v=4
+emoji: ⭐️
+message: 안녕하세요! GDG Seoul 최고!!
+facebook: jess0884
+github: hanyeonhee
+---
diff --git a/_guestbook/yjkim.yaml b/_guestbook/yjkim.yaml
new file mode 100644
index 000000000..78c0df0ba
--- /dev/null
+++ b/_guestbook/yjkim.yaml
@@ -0,0 +1,9 @@
+---
+name: 김연주
+image: https://avatar.tobi.sh/tobiaslins.svg?text=YJ
+emoji: 🥳
+message: 안녕하세요! GDG Seoul 최고!
+facebook: 
+twitter: 
+github: yjkko
+---
diff --git a/_guestbook/yskim.yaml b/_guestbook/yskim.yaml
new file mode 100644
index 000000000..5ac6eb927
--- /dev/null
+++ b/_guestbook/yskim.yaml
@@ -0,0 +1,7 @@
+---
+name: 김연수
+image: https://avatar.tobi.sh/tobiaslins.svg?text=YS
+
+emoji: 🥳
+message: 안녕하세요! 재밌게 즐기다 가겠습니다
+---
diff --git a/_guestbook/yuseunghyun.yaml b/_guestbook/yuseunghyun.yaml
new file mode 100644
index 000000000..6e70625cb
--- /dev/null
+++ b/_guestbook/yuseunghyun.yaml
@@ -0,0 +1,9 @@
+---
+name: 유승현
+image: https://avatar.tobi.sh/tobiaslins.svg?text=YSH
+emoji: 🎃
+message: 좋은 경험 감사합니다!
+facebook:
+twitter:
+github: db4350
+---
diff --git a/_guestbook/ywkim.yaml b/_guestbook/ywkim.yaml
new file mode 100644
index 000000000..0b15a74f5
--- /dev/null
+++ b/_guestbook/ywkim.yaml
@@ -0,0 +1,9 @@
+---
+name: 김영우
+image: https://avatar.tobi.sh/tobiaslins.svg?text=YW
+emoji: 🥳
+message: GDG 최고 DevFest 최고
+facebook: 
+twitter: 
+github: hjkkhj123
+---
diff --git a/_guestbook/zuyoungpark.yaml b/_guestbook/zuyoungpark.yaml
new file mode 100644
index 000000000..e760a876f
--- /dev/null
+++ b/_guestbook/zuyoungpark.yaml
@@ -0,0 +1,7 @@
+--
+name: 박주영
+image: https://avatar.tobi.sh/tobiaslins.svg?text=JY
+emoji: 🥳
+message: 할룽
+github: zu0p
+--
diff --git a/images/devfest-logo.png b/images/devfest-logo.png
new file mode 100644
index 000000000..1c9c47665
Binary files /dev/null and b/images/devfest-logo.png differ
diff --git a/index.html b/index.html
index c12e6b92d..e1edc46df 100755
--- a/index.html
+++ b/index.html
@@ -1,5 +1,5 @@
 ---
-title: GitHub Workshop Guestbook
+title: DevFest Seoul 2019 Guestbook
 ---
 <!DOCTYPE html>
 <html>
@@ -16,8 +16,9 @@
     <section id="guestbook">
         <div class="container">
             <div class="section-header">
-                <h1 role="section-heading">{{site.workshop.name}} Workshop Guestbook</h1>
-                <h3><a href="{{site.workshop.github}}">Sign the guestbook</a></h3>
+                <img src="images/devfest-logo.png" alt="devfest로고">
+                <h1 role="section-heading">Seoul 2019 방명록🥳</h1>
+                <h3><a href="{{site.workshop.github}}">PR 제출하러 가기🕊</a></h3>
             </div>
 
             <div class="guestbook-content">
@@ -32,6 +33,10 @@ <h4>{{guest.message}}</h4>
                     <hr/>
                     <div class="guestbook-social">
 
+                      {% if guest.facebook %}
+                        <a href="https://facebook.com/{{guest.facebook}}" alt="Facebook"><i class="fab fa-facebook"></i></a>
+                      {% endif %}
+
                       {% if guest.twitter %}
                         <a href="https://twitter.com/{{guest.twitter}}" alt="Twitter"><i class="fab fa-twitter"></i></a>
                       {% endif %}
@@ -55,11 +60,11 @@ <h4>{{guest.message}}</h4>
     <section class="join" id="join-large">
         <div class="container">
             <div class="join-content">
-                <h3 role="section-heading">Sign the workshop guestbook!</h3>
+                <h3 role="section-heading">PR(pull request)제출하고 사탕받아가세요!</h3>
                 <div class="flag">
-                        <img src="/images/flag.png" alt="">
+                        <img src="images/flag.png" alt="">
                 </div>
-                <a href="{{site.workshop.github}}" class="button button-white">Sign the guestbook!</a>
+                <a href="{{site.workshop.github}}" class="button button-white">PR 제출하러 가기🕊</a>
             </div>
         </div>
     </section>
diff --git a/yangbyeonghoon.yaml b/yangbyeonghoon.yaml
new file mode 100644
index 000000000..f967ae826
--- /dev/null
+++ b/yangbyeonghoon.yaml
@@ -0,0 +1,7 @@
+---
+name: 양병훈
+image: https://avatar.tobi.sh/tobiaslins.svg?text=YBH
+emoji: 🥳
+message: 안녕하세요.
+github: ybh1760
+---