Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Ridiculously poorly indexed; writing's not much better

This is one of those amalgamated code books that seems to have been put together for no other reason than to enrich the authors. It is not comprehensive, it provides no insights into best practices, and, worst of all, it can't even be used as an effective reference because of the really astoundingly bad index. Look at the Bill Vaughn book for something really worth reading.