Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This book is not worth the paper it is written on

When I go to a book that gives details about an Operating System, I expect more than I can find in the built in help. This book contained too many errors, was incomplete in areas that most people would be looking for, and is in my opinion a waste of not only money, but time. I deserve a refund for this. Stick to Mark Minasi for titles like this, you will rarely be disappointed.