Instruct: Classify Amazon reviews into positive or negative sentiment
Query: decent material for exam preparation

This book definitely covers almost everything that's on the exam.However, I must agree with most reviewers that you need more than this book to pass the exam. With practice exams, (I purchased ones from Transcender) if you read this book thoroughly, and understand the core concepts that this book tries to touch, then you won't have any problem passing this exam. (and this exam isn't that hard anyway!)Good luck,