Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Confusing as all get out!

I tried to learn chess from Chess For Dummies. It was not written so even a dummy could understand things. It starts showing you stuff about how to play chess then suddenly you find a chapter in between that has nothing to do with what was covered before and leaves you lost and confused. How can a book like this be popular? Maybe because it is just part of a series of hundred of books that cover other subjects but just this one is aweful because the company did not know any better when putting it together.