Given an English language product review, determine if it is a Good Review or a Bad Review. A good review is one where the product's review has positive tone and Bad review is one where the tone of product's review is negative.

Don't even think about this book if you have a choice between reading it at school and an actual textbook. The only good part of the whole thing is that it's cheap. But as far as learning goes, look elsewhere. I'm going back for my final week now just because it'll make no difference how little time I've spent on it.
Bad review