Video - After Effects Tutorial Links

Text Animation:
http://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c1103906c6dea-7caba.html

http://library.creativecow.net/series/After-Effects-basics-tutorials-by-Andrew-Devis
(33-45 are text tutorials, but this whole series is very good for all sorts of AE techniques, and most are only 5-10 minutes. Plus he has a great accent. HIGHLY RECOMMENDED!)

Masks:
http://library.creativecow.net/articles/devis_andrew/AE_Creating-Masks/video-tutorial
(this one has a good description of how to effectively use bezier handles when drawing a path, and using multiple masks)

http://library.creativecow.net/articles/devis_andrew/AE-Basics-46-Feather-Mask-Tool/video-tutorial
(this one goes into detail about the mask feather tool)

Motion Tracking:
http://helpx.adobe.com/after-effects/using/tracking-stabilizing-motion-cs5.html

Particle Simulation:
http://ae.tutsplus.com/articles/news/an-introduction-to-particle-emitters/

Other Simulations:
http://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c1103a9d3c597-7acba.html

Timewarp
http://help.adobe.com/en_US/aftereffects/cs/using/WS09B6A698-8F9E-4a00-8D1B-07FC62FB2D30a.html#WS641C5190-1DAD-4150-B17F-F339C6DF1FB2a

Cameras
http://help.adobe.com/en_US/aftereffects/cs/using/WS3878526689cb91655866c1103906c6dea-7e29a.html

http://library.creativecow.net/articles/devis_andrew/Animating-a-Camera-1/video-tutorial

http://library.creativecow.net/devis_andrew/Animating-a-Camera-2/1

http://library.creativecow.net/devis_andrew/Animating-a-Camera-3/1