I recently posted an 8 part free SketchUp tutorial on my blog. It is aimed at woodworkers with little or no CAD experience. Using a Bedside Table as the learning vehicle the student learns all the primary tools and creates a model including dimensioned shop drawings complete with wood textures. SketchUp is a powerful and free drawing package. For a brief description go to http://www.srww.com/google-sketchup.htm . To view the SketchUp tutorials go to http://www.srww.com/blog and click on SketchUp in the Category List or Tag Cloud in the right column toward the bottom.