Ive read thru the ones on rc universe but the complex ones are hard to understand. Is there a site that explains how to do aerobatic tricks and maybe even with pictures?

Most aerobatics are simple combinations of loops and rolls. Many of the stall-type maneuvers, like snaps, spins, lomcevaks, tumbles, etc., will depend on the plane, and any how-to may or may not apply.

There are sites out there, I just don't know any off the top of my head. A google search on "radio control aerobatics" yielded a few hits on a book, "Radio Control Aerobatics For Everyone" by Dave Patrick.

http://www.geocities.com/festacom/

http://www.downonthedeck.com