Adobe After Effects

So...I wanna learn how to use this program, but where is the best place to start? I plan on using it for future short films...

Let me google that for you. Also more tutes.

For special effects and general filmmaking, check out the FilmRiot video podcast. They go over stuff like making fake explosions and blood and guns, to things like sound effects and room tone. (Check out the older episodes too)
http://revision3.com/filmriot