I really like this book because it concentrates on what you need to know and delivers it fairly concisely. You could even skim it because the concepts are straightforward. After reading the book, it's quite easy to use as a reference due to the way it's structured. I do, however, have very serious concerns regarding the editing. The text and accompanying tables, code samples and screenshots are riddled with errors that make it hard to know whether what you are reading is a tricky concept, or just that the book is wrong. It seems as if the book was either never proof-read, or in revision, Peachpit Press did not put enough effort into proof-reading it again. It must be quite tedious to proof-read a book like this, but that's what publishers are supposed to do.
My other gripe is that, of the numerous web-page references, the links cited in the book were typically out of date within two years of the book being published. I think there is an onus on the author to at least keep the code samples available on their own website for a reasonable period of time. I did manage to track them down on his website, but they were not where they were supposed to be. They were described as 'still available', with reference to the more recent sixth edition of the book. It is not clear how different the code samples are in the sixth edition, so obviously they would not be the ideal resource for someone with earlier editions. What happens when edition seven is published is anybody's guess.
Despite the poor editing, I must say that this book has helped me to learn CSS3 with great ease. I'm not sure if that's because it's an easy subject, or whether I should give complete credit to the design template of the Visual Quickstart Guide and the writing of Jason Cranford Teague. For anyone considering buying this book, I would advise getting the most up-to-date edition, which is hopefully better edited.