The author rewrote much of his work during the passage of Lightroom 3 and Lightroom 4, it is not a simple update. Its strength: it is written by Martin Evening which is close to the Adobe team and therefore a description of the use of RS as it was thought (and not partial use of a master photographer who 'simply' the tool). My only complaint, the printouts are not necessarily a measure of the impact of manipulation, so this is a book to read by manipulating the software :)
~ On my profile, find the link to my web page and detailed critiques photo book ~