Instruct: Classify Amazon reviews into positive or negative sentiment
Query: One of the worst textbooks I've had the pleasure of using

This book is awful. Without a teacher this textbook is nonsensical, and even with a teacher the book is so careful not to tell you anything important (because it wants you to do the problems yourself) that you end up not actually understanding the material. The examples are weak and they skip vital steps and explanations so that it is difficult to piece anything together. Found myself looking to other sources to figure stuff out.