Go right to the source. Microsoft has lots of free training information available.
Deploy Windows Server 2008 by using Server Manager to install multiple server roles and features in a single session, manage a server’s identity and system information, display server status, identify problems with role configuration, and manage the roles installed on a server. Server 2008 Virtual Labs.
I have written about some of these resources in the past in my blog. In the IT trenches? So am I – read my IT-Trenches blog.