Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent tool for guitarist

As far as I know, the best book covering advanced theory directly related to the guitar. Excellent book. As the author says, one would certainly need 7 or 8 lifetimes to cover ALL the material found in the book.Really interesting concept of "do it yourself" or "this-is-not-a-method" : you can work a little on one chapter and come back a year later to continue (when you feel ready or when you need it)....and at last ...Mr. Goodrick likes humor! (you can "feel" it through the book and that's a good way to learn music!!!)