Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Don't bother buying it - Nothing useful in this book

I didn't get any value out of this book that I couldn't find on the Internet. There was nothing new, in fact - some of it was written in a way to cauas misunderstandings about the true nature of it. There was nothing in the book that let you know HOW you could actually USE the Active Directory. What a waste of money!