A cool and easy to learn trick is how to ride while sitting on your handlebars, facing backwards. To learn it at first start at a stand still and sit on ur handlebars, putting ur hands the same way you normally would around the handles, and place one foot on a pedal. Push off gently and get your pushing foot on the other pedal. The key to this trick is balance, but if you keep practicing youll get it in no time. Good luck!