Lynn Allen recently posted some awesome video tour/demo/training media. A series of short videos lead you through the new and improved features in AutoCAD 2011. Of particular interest to me were the enhanced 3D tools, especially as AutoCAD now offers surfacing tools more often seen in dedicated mechanical & modelling packages. For 2D work the “Parametric Constraints” and “Everyday Productivity Tools” sections are a must while Hatch & Transparency satisfies the artist that lurks inside every CAD user!
Together the videos form a concise, but complete, introduction and each topic is a separate “video chapter” making it easy to review them as you wish. One feature I liked on the player is the toggle to silence the, frankly rather annoying, background music.