MSDN recently posted the first chapter as an excerpt from a book that my Critical Path Training colleagues Ted Pattison , Scot Hiller & I have been working on: Inside SharePoint Server 2010. This book is the successor to Inside Windows SharePoint Services 3 and Inside Microsoft Office SharePoint Server 2007 . It will be available later this fall, but for now you can see the first chapter on MSDN! More chapters will appear on MSDN soon!
» MSDN: Inside SharePoint Server 2010