As other customers have mentioned, the author says that he's not covering features in Dreamweaver CS6 that are obsolete, or will become obsolete, etc.
But the author MacFarland still devotes a very significant number of pages to Adobe's own "Spry" framework. In the summer of 2012, Adobe officially dropped support for Spry, and told users to rely on non-proprietary frameworks like JQuery instead of Spry. McFarland should have seen this coming at least a year ago, if not from the very beginning. And, I suspect had he done some old-fashioned hard-nosed investigative reporting among people working at Adobe, and among developers working with Adobe, he could have obtained quotes 'from unnamed sources' confirming that Spry would be abandoned.
And, unfortunately, MacFarland does not devote many pages to the the one proprietary feature in Dreamweaver that has (I think) always been there, and always will be there: Dreamweaver Templates. There are many template tricks and tips, some involving very very simple lines of code, which he does not cover. And I don't think he really appreciates how powerful these templates can be -- descriptions of a variety of site-structure scenarios using templates would have been nice, along with some tips or outlines on how to do each of the scenarios. The template feature can be powerful, but it can also be a little mind-boggling. (And alas, the best book on the topic is out of print, and dates back the MX version of Dreamweaver, and though it still contains a great deal of useful info, that old template book Dreamweaver MX Templates is not terribly well-written or well-organized.)
On the other hand, MacFarland's book is packed with useful info, small and big tips, and is fairly well organized (though Templates chapters is, oddly, at the end of the book) and well-written (though he could have been more concise without sacrificing any information).
I do wish, however, it covered Dreamweaver more, and basic web development less. I'm one who can use lots of help with web development coding and the like, even very basic things. But I don't need every single book I own that is remotely related to web design to explain the difference between POST and GET.
If I buy a book on Dreamweaver, and I'm creating a form, I want to know how Dreamweaver can help me create that form, and I can use another book or article for the overall instructions on how to code a form.