Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Highly recommended

Really smashing. State-of-the-art, with all the latest useful research, but jargon-free and reader-friendly. Full of indispensable practical tips and sensible advice on controversial issues such as inclusion and "miracle cures". If you're just starting to find out about autism, this would be a great place to start, but people who are already well-read will still find a great deal of new information.