Paste the Retro-Conky-GNOME folder into your .conky folder.
copy fonts from fonts folder into your .fonts folder
You may want to install the Fira fonts, if not replace the Fira font name with font of your choice in the Retro-Conky-GNOME-Left and Retro-Conky-GNOME-Right files
Make sure to replace address in accu_RSS with the your location