This is a book that programmers as well as administrators should keep on their client machine.  Lot’s of tips and insight into the latest and greatest Windows Server 2012:

http://blogs.msdn.com/b/microsoft_press/archive/2012/06/04/free-ebook-introducing-windows-server-2012.aspx

Please note that as of this writing only the PDF is downloadable.

Just download, don’t hang around here.