You would think that http://www.microsoft.com/technet would have the SQL Server 2005 books, right? GONG!!! Nope. So where do you get the goods? Well, this gets you into the age old debate about the audience for the product. Is the audience IT Pro, DBA, Developer or all of the above? That answer is pretty obvious. DEVELOPER !!!
So head over to MSDN website for the SQL Server 2005 Documentation.