The default prefix for the bot is a period (.) but you may change it using .changeprefix (new prefix)
Use .help to get the list of categories for the bot, and .help (category) for a list of commands in the category
.img (search) {optional} (, number) Gets images from google, add a , num to get multiple images
.yt (search) Gets a youtube video from the search parameter
define (search) Get the definition of the search parameter