I was going through the hellecasters' site 6 month ago, and on the links section, I saw http://www.zenguitar.com

I have bought the book, and the CD, and while the CD kind of sucks, the book has essential concepts, about learning, playing, enjoying the guitar...
If you think you have seen it all in music education, try this one out. It doesn't talk about technique and theory, but about attitude. I think it has taken what Steve VAI started in the "martian love secrets" stuff way beyond everything.