Well, and I hope those who put it together remember to avoid copyright issues. We have artists/computer gurus in our community that have put together their own tutorials and/or books, and that should be respected.

You can do some basic stuff without math ... I haven't gotten into the advanced stuff for that reason. But it has been good to work with it. I'd suggest you give it a whirl. Start with something simple like attaching one of the special diffuse or specular nodes. Even that can make surfaces pop!