Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Do not spend money on this book!

Wait for a colleage to waste $40 on it, then pick it out of the trash. I can hardly believe that Microsoft would put their imprimatur on such a book. Numerous code samples simply do not work. Connection strings for Riordan's own installation have to be replaced; it you don't know already know something about ADO.NET, you'll be in despair. The format is a "color by numbers" sort of thing; the various objects are poorly explained. Different ways of creating objects should not be mixed together in the same program; it makes the source unreadable, and pedagogically useless.I learned a lot trying to fix the errata myself; I should get paid.