Instruct: Classify Amazon reviews into positive or negative sentiment
Query: As a teacher this is a great resource for advancing students

Other reviewers are correct, this is not for beginners. It is intermediate to advanced and worth every penny.I have both of these volumes (1 & 2) and I review them every few months as a reminder and touch up to my playing.I think John is a fine teacher, and if people have not learned the language of music, they may find his explanations confusing. Not his fault, but the short-comings of other reviewers (in my opinion).I found his discussions straight forward, plain, simple to understand and challenging to put to the fingers.