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This page is not the page you were looking for. No doubt. This is possibly because I not only reworked the TYPO3 Extbase Book (and published the 3rd edition recently) but I also updated the website and renamed a few pages.
Have a look at the menu at the top! Any item that could make you happy?
The link Buy Online would make both you and me happy — you get an awesome book about how to develop modern TYPO3 extensions with Extbase and Fluid, and I get a compensation for months of hard work :-)
Feel free to browse around and learn more about the book. The page Home is a good starting point.