A great introduction to HTML 5 - well-written and actually fun while not eclipsing the technical content that makes it a useful book. My only negative remark (which is why it's received 4 stars instead of 5) has to be about the quality of the print, which in my edition (and others I've seen) is a little on the cruddy side - in particular poor registration renders a certain amount of the text fuzzy and in some places you actually need to peer and really concentrate to work out what the text says. These spots are few though and while it's not great, for the most part I would say that the quality of the writing and information makes it a worthwhile book. I really hope the publishers sort out the printing problems quickly though. It's a shame that such a great book is marred by such poor production.