Project Cooper for Windows (Free)

Project Cooper for Windows is ideal for quick design work. Project Cooper sketching software enables you to draw accurate, detailed plans and layouts to scale using simple 2D drawing tools, predrawn symbols, and sample drawings. Because the software produces files in one of the most widely used design format, it is easy to share your drawings with clients, architects, and other project partners. The download is available through Download.Com.

myCADsite.com

This web site has been around for 10 years, offering the best in free online training for AutoCAD. The lessons are adapted from a 4 level course I developed for new AutoCAD users. Originally, the tutorials were deigned for Release 14 and have now been updated and adapted for AutoCAD 2008. My approach has always been to teach the commands in their context and in a natural progression. Each tutorial also has a quiz to help students review.
http://www.we-r-here.com/cad/index.htm