Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Examples Difficult to set up

The book contains a lot of useful information but since everything is very interconnected you can't really read just the parts that are of interest to you. Getting the environment set up to run their examples is also horribly difficult. I'm a fairly knowledgable server-side Java programmer yet I was unable to get their example systems configured and working after several wasted hours of tinkering. Better setup documentation is crucial.