Windows server
Windows Server Windows 2012 Server 
Info about installing Windows 2012 server, from the MS Technet Library.
 Windows Server Windows 2012 Server Essentials
Step-by-step instructions for installing and configuring Windows Server 2012 Essentials, including pre-installation tasks and information about system requirements. Suited for smaller networks – 75 workstations or less.
wazmacWindows Server