Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very comprehensive, needs more explaining of basic concepts

I like this book because it is really comprehensive, it has given me new tools to play and expanded my knowledge of scales and chord progression. However sometimes when explaining the theory, it obviates basic concepts like an interval of a third, or some basic theory like the distance between a I, IV and a V in the diatonic scale and in the fretboard. For non musicians it might take a little while to understand the fretboard and the scale system. The arrow system used with the 'caged' scales is also very complicated and it took me more than it should to understand the turnarounds. Overall it is a great book and I recommend it provided that you have some basic knowledge or you complement it with music theory.