Adobe products, all that I have encountered, set some sort of standard for abysmal documentation. In fact, a whole industry has arisen to instruct people in the basics of such software as Photoshop and Flash. Since people have complained about this for years, it is clear that adequate online and printed manuals are not a corporate priority for Adobe.
It is good that we have books such as this one from O'Reilly to ease the burden of learning the basics and finding out how to take advantage of new version features for those who have mastered the basics. I think most people reading this short review know what Flash is all about so I won't belabor the point by enumerating all the topics in these 700+ pages. The author has integrated images well into the flow of the text--although I think sometimes not having color takes a bit of life out of the action.
The content homes in on the skills and features related to the most implemented aspects of the software, such as timeline animation. This is the book's real value. The one negative, a small one, is that the book barely touches on the new trend we see with Flash: the construction of complete commercial applications with this technology. Even so, the last chapter (21) "Introducing Adobe AIR", is a very good introduction to this new trend.