Basic Tutorial
Install
- Download the plugin
 - Copy/Cut the plugin and paste it to your 
pluginsfolder - Start the server to let it load
 - Stop the server
 - Make some configs and menus
 - Start the server and voila
 
Add a menu
- Go to the 
plugins/BetterGUI/menufolder - Create a ".yml" file
 - Open the created file
 - Add some menu settings and buttons
 - Save the file
 - Reload the plugin
 - Done
 
Add an addon
- Download the addon
 - Go to the 
plugins/BetterGUI/addonfolder - Copy/Cut the downloaded jar file and paste it to the folder
 - Start/Restart the server
 - Done