Several tutorials to help with the manipulation of the Blender application. Let us know if there are any that we should add to the list!
Blender's Tutorials - Blender's own tutorials are split up into several categories: Non-Blender, Game Engine, Specials, Rendering, Light, Materials, Animation, Modeling and Getting Started. Probably pretty reliable, since it's Blender's own page!
YouTube 10-Minute Crash Course - YouTube has several good videos showing how to use Blender. This particular one is a 10 minute crash course. These videos are good for visual learners - you can do the tutorial right along with the video if you like.
Blender 3D: Noob to Pro - Blender 3D: Noob to Pro is a Wikibook with a series of tutorials designed to help someone learn to use Blender. It covers many areas, and is fairly complete.