Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not worth the time or money!

The book is a sketchy, high level overview. The CD test is the real reason I bought this book, and that proved to be very disappointing. Multiple obvious errors on simple topics, which means none of the test info can be relied upon.None of the authors names are displayed with their certifications - guess after turning out such a lousy product they are keeping a low profile.