diff --git a/manual/includes/_pagable.md b/manual/includes/_pagable.md
index b05dd6c..c01b226 100644
--- a/manual/includes/_pagable.md
+++ b/manual/includes/_pagable.md
@@ -116,10 +116,66 @@ Metods:
 - getLimit
 - setLimit
 
+**PicoSortable**
+
+Constructor:
+
+Parameters:
+
+Users can enter an even number of parameters where odd numbered parameters are columns while even numbered parameters are methods.
+
 Example:
 
+```php
+$sortable = new PicoSortable("name", "asc", "phone", "desc");
+```
+
+Method:
+
+- add
+- addSortable
+- createSortable
+- createOrderBy
+- isEmpty
+- getSortable
+
+Static methods:
+
+- getInstance
+
+addSortable
+
+Parameters:
+
+- PicoSort|array
+
+**PicoSort**
 
-**With Page**
+Constructor:
+
+Parameters:
+
+- string $sortBy
+- string $sortType
+
+Metods:
+
+- getSortBy
+- setSortBy
+- getSortType
+- setSortType
+- __call
+
+Static methods:
+
+- getInstance
+- fixSortType
+
+
+Example:
+
+
+**Pageable without Sortable**
 
 ```php
 $pageable = new PicoPageable(new Page(1, 100));
@@ -128,7 +184,7 @@ $pageable = new PicoPageable(new Page(1, 100));
 // no sortable
 ```
 
-**With Page and Sortable**
+**Pageable with Page and Sortable**
 
 ```php
 $sortable = new PicoSortable();
@@ -216,6 +272,21 @@ $pageable = new PicoPageable(new PicoLimit(0, 100), $sortable);
 // ORDER BY user_name ASC, email DESC, phone ASC
 ```
 
+or
+
+```php
+$sortable = PicoSortable::getInstance()
+    ->add(PicoSort::getInstance()->sortByUserName(PicoSort::ORDER_TYPE_ASC))
+    ->add(PicoSort::getInstance()->sortByEmail(PicoSort::ORDER_TYPE_DESC))
+    ->add(PicoSort::getInstance()->sortByPhone(PicoSort::ORDER_TYPE_ASC))
+;
+
+$pageable = new PicoPageable(new PicoLimit(0, 100), $sortable);
+// offset = 0
+/// limit = 100
+// ORDER BY user_name ASC, email DESC, phone ASC
+```
+
 1. Construtor with page as PicoPageable and sortable as PicoSortable
 
 `$pageable = new PicoPageable(new PicoPage(1, 100), new PicoSortable('userName', 'asc', 'email', 'desc', 'phone', 'asc'));`
diff --git a/manual/index.html b/manual/index.html
index 8a4e547..2cedf70 100644
--- a/manual/index.html
+++ b/manual/index.html
@@ -5870,13 +5870,57 @@ <h3>Pageable and Sortable</h3>
 <li>getLimit</li>
 <li>setLimit</li>
 </ul>
+<p><strong>PicoSortable</strong></p>
+<p>Constructor:</p>
+<p>Parameters:</p>
+<p>Users can enter an even number of parameters where odd numbered parameters are columns while even numbered parameters are methods.</p>
 <p>Example:</p>
-<p><strong>With Page</strong></p>
+<pre><code class="language-php">$sortable = new PicoSortable("name", "asc", "phone", "desc");</code></pre>
+<p>Method:</p>
+<ul>
+<li>add</li>
+<li>addSortable</li>
+<li>createSortable</li>
+<li>createOrderBy</li>
+<li>isEmpty</li>
+<li>getSortable</li>
+</ul>
+<p>Static methods:</p>
+<ul>
+<li>getInstance</li>
+</ul>
+<p>addSortable</p>
+<p>Parameters:</p>
+<ul>
+<li>PicoSort|array</li>
+</ul>
+<p><strong>PicoSort</strong></p>
+<p>Constructor:</p>
+<p>Parameters:</p>
+<ul>
+<li>string $sortBy</li>
+<li>string $sortType</li>
+</ul>
+<p>Metods:</p>
+<ul>
+<li>getSortBy</li>
+<li>setSortBy</li>
+<li>getSortType</li>
+<li>setSortType</li>
+<li>__call</li>
+</ul>
+<p>Static methods:</p>
+<ul>
+<li>getInstance</li>
+<li>fixSortType</li>
+</ul>
+<p>Example:</p>
+<p><strong>Pageable without Sortable</strong></p>
 <pre><code class="language-php">$pageable = new PicoPageable(new Page(1, 100));
 // page number = 1
 // page size = 100
 // no sortable</code></pre>
-<p><strong>With Page and Sortable</strong></p>
+<p><strong>Pageable with Page and Sortable</strong></p>
 <pre><code class="language-php">$sortable = new PicoSortable();
 
 $sort1 = new PicoSort('userName', 'asc');
@@ -5936,6 +5980,17 @@ <h3>Pageable and Sortable</h3>
     -&gt;add(new PicoSort('phone', PicoSort::ORDER_TYPE_ASC))
 ;
 
+$pageable = new PicoPageable(new PicoLimit(0, 100), $sortable);
+// offset = 0
+/// limit = 100
+// ORDER BY user_name ASC, email DESC, phone ASC</code></pre>
+<p>or</p>
+<pre><code class="language-php">$sortable = PicoSortable::getInstance()
+    -&gt;add(PicoSort::getInstance()-&gt;sortByUserName(PicoSort::ORDER_TYPE_ASC))
+    -&gt;add(PicoSort::getInstance()-&gt;sortByEmail(PicoSort::ORDER_TYPE_DESC))
+    -&gt;add(PicoSort::getInstance()-&gt;sortByPhone(PicoSort::ORDER_TYPE_ASC))
+;
+
 $pageable = new PicoPageable(new PicoLimit(0, 100), $sortable);
 // offset = 0
 /// limit = 100
diff --git a/src/Database/PicoSort.php b/src/Database/PicoSort.php
index dbf9e34..19bf9d1 100644
--- a/src/Database/PicoSort.php
+++ b/src/Database/PicoSort.php
@@ -21,6 +21,11 @@ class PicoSort
      */
     private $sortType = "";
     
+    /**
+     * Constructor
+     * @param string $sortBy
+     * @param string $sortType
+     */
     public function __construct($sortBy = null, $sortType = null)
     {
         $this->setSortBy($sortBy);
@@ -40,7 +45,7 @@ public function getSortBy()
     /**
      * Set sort by
      *
-     * @param string $sortBy  Sort by
+     * @param string $sortBy Sort by
      *
      * @return self
      */ 
@@ -64,7 +69,7 @@ public function getSortType()
     /**
      * Set sort type
      *
-     * @param string $sortType  Sort type
+     * @param string $sortType Sort type
      *
      * @return self
      */ 
diff --git a/tutorial.md b/tutorial.md
index b9b2f3f..ce9fecd 100644
--- a/tutorial.md
+++ b/tutorial.md
@@ -6480,10 +6480,66 @@ Metods:
 - getLimit
 - setLimit
 
+**PicoSortable**
+
+Constructor:
+
+Parameters:
+
+Users can enter an even number of parameters where odd numbered parameters are columns while even numbered parameters are methods.
+
 Example:
 
+```php
+$sortable = new PicoSortable("name", "asc", "phone", "desc");
+```
+
+Method:
 
-**With Page**
+- add
+- addSortable
+- createSortable
+- createOrderBy
+- isEmpty
+- getSortable
+
+Static methods:
+
+- getInstance
+
+addSortable
+
+Parameters:
+
+- PicoSort|array
+
+**PicoSort**
+
+Constructor:
+
+Parameters:
+
+- string $sortBy
+- string $sortType
+
+Metods:
+
+- getSortBy
+- setSortBy
+- getSortType
+- setSortType
+- __call
+
+Static methods:
+
+- getInstance
+- fixSortType
+
+
+Example:
+
+
+**Pageable without Sortable**
 
 ```php
 $pageable = new PicoPageable(new Page(1, 100));
@@ -6492,7 +6548,7 @@ $pageable = new PicoPageable(new Page(1, 100));
 // no sortable
 ```
 
-**With Page and Sortable**
+**Pageable with Page and Sortable**
 
 ```php
 $sortable = new PicoSortable();
@@ -6580,6 +6636,21 @@ $pageable = new PicoPageable(new PicoLimit(0, 100), $sortable);
 // ORDER BY user_name ASC, email DESC, phone ASC
 ```
 
+or
+
+```php
+$sortable = PicoSortable::getInstance()
+    ->add(PicoSort::getInstance()->sortByUserName(PicoSort::ORDER_TYPE_ASC))
+    ->add(PicoSort::getInstance()->sortByEmail(PicoSort::ORDER_TYPE_DESC))
+    ->add(PicoSort::getInstance()->sortByPhone(PicoSort::ORDER_TYPE_ASC))
+;
+
+$pageable = new PicoPageable(new PicoLimit(0, 100), $sortable);
+// offset = 0
+/// limit = 100
+// ORDER BY user_name ASC, email DESC, phone ASC
+```
+
 1. Construtor with page as PicoPageable and sortable as PicoSortable
 
 `$pageable = new PicoPageable(new PicoPage(1, 100), new PicoSortable('userName', 'asc', 'email', 'desc', 'phone', 'asc'));`