Dennis Radeke at The Genesis Project blog has been putting together some excellent tutorials on After Effects basics. The blog is said to be "A blog for beginners in the creative space. Beginner to intermediate trips, tricks and tutorials on several Adobe products, especially After Effects, Premiere Pro and Photoshop. Who knows what else!" Drop over there if you're getting up to speed on After Effects or other Adobe apps. There is a lot of excellent content to delve into.
Some recent posts in the After Effects 101 arena include "ABC Logo Treatment in After Effects," "After Effects 101 Tutorial: Bringing the basics together," - a post on animating a path that you create in Photoshop or Illustrator in After Effects - and "After Effects 101 Tutorial: conTEXTual Blur."
Check out The Genesis Project!
You may also want to check out some of Zoom In Online's screencast tutorials on After Effects.