Instruct: Classify a given review as either positive or negative.
Query: Brilliant resource for teachers!

This book is kind of bizarre and certainly not "up to date" for 2012, but it has, like the title suggests, all the essentials. For history teachers who don't like to rely on textbooks or who need a quick basic reference, this book is fantastic. It helps you weed out what information is irrelevant and what should be focused on. Simple. It's not really ideal to read on its own, but a great reference book.