Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Disappointment

I am looking to understand accupuncture and accupressure without having to suffer through reading text-book style presentations on the subject. Hence my choice of an "Idiot's Guide" book -- I thought it would give me, in layman's terms, a greater understanding of the concepts on which accupuncture and accupressure are based -- kind of a mini-course on the subject. Instead, it focused on what practitioners of these medical arts can do for the patient and what to expect when visiting a practitioner.While the book does provide descriptions of points that can be stimulated on one's body to alleviate selected conditions as well as visuals in the form of pictures, these are quite limited and not easy to follow.Also, as I read the book, I was annoyed by the poor editing of the text. Frequent grammatical problems undermine the book's credibility.Hence my disappointment.