Instruct: Classify the given review into positive or negative sentiment.
Query: Not helpful at all

For my purposes, it is not helpful. I am trying to teach myself and this book just jumps in expecting you to know already what you are doing. And then on top of it, all the notes are labeled which does not help me to learn. I think it is okay if you just want to play popular tunes straight from the book but not on actually learning about reading music or technique.