I work daily with Typo3, managing 3 sites utilizing it, and always working with new extensions etc.etc.
I purchased this book to help answer alot of questions in the daily management of Typo3, and found it very....very....disappointing. It had very little useful information (such as how to direct domains to subfolders, 0 information on the most common extensions, informative instruction in the use of those extensions, etc.) I am not very interested in the history of the programmers, although some information is good, you can always go to the site for more.
In todays development world, books have to interact with a associated website. A great example would be "More on CSS by Eric Myer".
So all in all, don't waste your $60 dollars, just find a friend that knows it and have him do a sit down.