Windows Server 2008 - Technet portal and free training
For a limited period, some free e-books and online training courses is available at https://www.microsoft.com/learning/windowsserver2008/default.mspx. The overall Technet portal for Windows Server 2008 is at https://technet.microsoft.com/en-gb/windowsserver/2008/default.aspx.
Why should you care about this? Well the top 10 reasons to deploy are here.