Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not for a serious puzzler.

To be fair, this book does do a decent job of illustrating some useful, if elementary, techniques for solving popular classes of problems. However, most people who would find such a book interesting have already seen the old chestnuts in here and know how to solve them. A serious puzzler would rather complain about how the problems are ambiguous, well-known, trivial, poorly stated, and/or poorly solved. I'd recommend this to an elementary school teacher trying to teach a unit on logic. But for everyone else, I suggest looking elsewhere. Fortunately, I got my copy free from the publisher. To me, that's about what it's worth.