A tricky book to use and hard to see who its for.
I have a lot of web experience in my job as a creative director in marketing and whilst I'm no programmer, I do like to keep abreast of web developments and know as much as I can reasonably can about web language.
With HTML 5 being the hot ticket (and a potential Flash killer according to some) I was very keen to get to grips with it's potential. Hence my interest in this book.
Talk about in at the deep end! Without any preamble or general discussion, this book launches into fairly hardcore (or it seems to me) coding examples. And rather than walk through an aspect, say an overview of how HTML handles media (a very strong suit apparently) the book seems to amble around subjects in a non-linear way.
My main criticism would be its lack of structure. It can't decide it its setting out concepts to a beginner, or providing tips to a seasoned programmer, and as a result, I don't think its useful to either. It might be useful if you have an intermediate knowledge, and certainly you would need some pretty solid grounding in the subject already to help you navigate its information.
I found it a frustrating read and thus not very helpful for what I wanted it for, but if you have experience and are looking for a book that has a lot of actual coding examples, this may work for you.