Sketchup is a Computer Aided Design software package from Google. The basic version is a free download. There is a student and professional version. The pro version has no expiration date, but the student version expires after a year from purchase.
The software is pretty full featured and easy to learn.
Initially, we will explore the software using the tutorials and other instructional materials. When we get a sufficient level of mastery, we will design personal projects. One of the things that we will do is use the Sketchup software to design some things that we can make.
Here are some links
http://download.sketchup.com/downloads/training/tutorials50/Sketchup%20Video%20Tutorials.html
Make Magazine Bench Project - http://www.makezine.com/blog/archive/2006/07/make_podcast_weekend_projects.html
Video Tutorials http://sketchup.google.com/tutorials.html
Create a page called SketchupDocumentation. On that page, you will record descriptions of what you do, and you can also add pictures of things that you create.