Instruct: Classify a review into positive or negative sentiment.
Query: Not worth [money]

This book is WAY overpriced for the content you get. Each of the many topics is only covered by a short little blurb - at best a couple of pages. Sometimes the blurbs are interesting, sometimes they aren't. But they all end, and sometimes abruptly. Sometimes you get drawn into the subject and then the author pulls the plug. It's like a tease. I almost think the author was hunting for a Nascar topic to write on, couldn't pick one, so decided to publish his notes instead.You'd actually be better off spending more money on better developed books covering in more detail a topic you are interested in. You might think that this book will give you a broad overview, but the information it provides is often too choppy to do even that.If you've just got to have this one, then at least go to Ebay and pick it up for a buck fifty. [Price] is really a steep price to pay for what you'll be getting here.