Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Somewhat OK for Reference, Bad for Test Preparation

I bought these thinking that Microsoft would be in the best position to write a training kit to prepare for the certification tests, since they are, after all, Microsoft tests. Big mistake. If I hadn't used the Transcender practice tests also, I would have gotten a rude awakening at the test center. The MS books have some decent reference information, but they don't prepare you for the tests.