Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buy it if you need it for a class. Otherwise, avoid.

This book is boring. It's pretty hard to get through. I bought it because I needed it for a class. When the class was over, I was glad to sell it. This is not a fun or exciting book.The binding, etc, is good. I mean, the book quality is good. But the content therein is lacking.