Instruct: Classify a given review as either positive or negative.
Query: Total waste of time.

I am a CCSA in NG and wanted something to supplement my studies for the CCSE in NG and also help me with my day to day job. So I was excited when this book came out. The technical content is very incorrect in places and simple grammar mistakes are very common. The writing style is just awfull and there is no flow in the book whatsoever. All this book does is server to confuse. Avoid at all cost!