Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Stay away from this one

If you're the type of person who likes to test out the source code examples in books, you're in for a real challenge with this one. There are no compiled versions of the source code, no make files -- you even have to create your own manifest files. I can forgive all this. What I feel cheated about is the bugs in the examples and all the time I had to spend to modify the source code so that it would compile. (I finally gave up.) I have contacted O'REILLY about this and they appear to have acknowledged the problem. I'm hoping the author will produce an updated version of the source code at a later point. I suggest downloading the examples from their web site and seeing if they compile and work properly before buying this book.