Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This book is not the best.

I bought this book and struggled through it to review for my certication exam, and I did alright, but I noticed a few instances where either through typographical or proofreading errors the book presented incorrect answers to its sample problems. I also felt that this book's section on calculation review was written to sell the calculations manual available from the same series. If you haven't done serious calculation work for some time, this is not the review for you. I use calculutions frequently as I work, and even so, these authors managed to make me question my ability. There are probably better review books available, but I was too cheap to buy another after spending $35 on this one.