"Impact Zone" is the book that got me started on this thing. My next book was Hebron's "6 Lies..." and his section on TGM/Homer Kelley. Kev Carter put me onto the Yellow Book, this site and the skads of related material.
I am beginning to understand how the term "ignorance is bliss" applies, but the pursuit and gathering of TGM knowledge is, if you are interested in golf as a lifetime committment, invaluable. This site is without question the necessary base from which to search.