I'm going to do a little SketchUp session with short notice. Starting in about 8 minutes. PM me for a link if you want to join in. I have room for a few more.
Dave will not toot his own horn, so let me do it for him. He has a downloadable video called Fine Woodworking’s Google SketchUp® Guide for Woodworkers - The Basics available for purchase from Taunton. It's 66 minutes and only $12.95.
Dave is a fabulous teacher. He has helped me tremendously. It is my firm opinion that learning SketchUp will make you a better woodworker. You get to make the mistakes on the screen before you make them on the table saw. And SketchUp is free! Just be sure to download the "Make" version from the SketchUp website.
Dave has been graciously making himself available to help. If I can help you get started, all you need is to have SketchUp loaded on your computer, a good Internet connection, and Skype.