Instruct: Classify Amazon reviews into positive or negative sentiment
Query: one star is too many

This is by far the worst purchase I have ever made. It goes to show that you shouldn't buy a book based on a table of contents alone. The author's code is weak at best. He explains 1/4 of the primitive code he writes and then throws in variables with no acknowledgement. In his discussion of directPlay he fails to mention the need to implement any interfaces. I've been teaching the database side of app developement for years, and if I can read a book and still be no better for it, it stinks.