Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: a bit disappointed

As other readers pointed out,though this book has a lot of information it is a bit messy making it hard for completly newbies to the Moz platform. Every chapter took me one or more deep re-reading (which is not something I appreciated very much).The code provided is desperatly buggy (-3 stars) and only works with Mozilla 1.4 (precisly, 1.4.1 it won't work!). And as the author points out debbuging is not easy.Fact is, there's not many books around on the subject.