Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A good multi-aspect read

This is one of the best books I had in my TESOL undergraduate work. If you like theory (and, I believe, you ought to like theory and have a decent grounding in it to do any sort of well-informed practice), this is a good broad approach to it.I know some reviews say that this isn't a great update from the 2nd edition. I can't speak to that - I only saw the 3rd. As a whole text, it is useful. Not every page will drop earth-shattering revelations, of course.It is a collection of essays by different authors and thus isn't overly cohesive. It's really more of a reader and collection of essays than a fully-bound and comprehensive book. Can be a great supplement to a well-taught class, but I wouldn't recommend it as solo reading for a practicing teacher.