Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not really worth it if you have any clue

This book labors to explain that Data Mining is possible. It spends 3 chapters explaining the business process flow of data mining as: 1. Figure out your business problem 2. data mine to figure out what to do 3. do it 4. measure to see if you did anything.It's nicely written, but VERY BASIC