Instruct: Classify Amazon reviews into positive or negative sentiment
Query: this book should come with its own textbook

this book sucks-- plain and simple. Go and get some outlines and another textbook if you want to learn DiffE from this book. Examples are horrible, none of the problems correlate and this book just doesn't explain the in between steps. When i want to learn something, i need to see the complete though process, not spend hours trying to figure out how they got form point a to point b in the example.