The best thing about this book, is that it is free, there isn’t even a soul sucking registration to go through. Just click and download. It’s available is a standard 8.5×11″ PDF (standard US Pages) as well as a smaller PDF for mobile. If you are looking for EPUB and MOBI files you’ll need to wait a few more weeks as they are supposed to be available starting in January (don’t hold me to that, I’m just going off the MSDN post.
Denny has a chapter on SQL Server security improvements that looks particularly interesting to me.