Instruct: Classify Amazon reviews into positive or negative sentiment
Query: useless

I bought it for a class and we never used the book. A few times we used the Appendixes in the back, but for the tests she printed those out for us, so I could've easily gone the entire semester with out this. I only give 2 stars because the problem doesn't lie entirely with the book and Amazon, of course - it's my teacher and my school that required a book we didn't need! :(