Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good for reference, Not good for begginer

I have quite a bit of background knowledge on HTML, so it was quite useful. but it was hard to grasp the things I did not know about. It also jumps right into some complicated things and has simplier things afterwards. So I would definitly recomend it for people who know HTML and/or XHTML, but I would recomend a different book for people who are begginers.