Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The most horrible book on networks I have ever read.

This book is completely and utterly useless. If you want a good book on networks get Tanenbaum. If you like O'Reilly titles - concise and to the point, this book is a complete OPPOSITE. Wordy, and most of the time pointless! Even if you have to get this book for a course, don't!