The Microsoft eLearning web site includes a wide variety of different online training courses.  I have used many of these to keep up-to-date with new releases and product features.  Best of all, there are many courses that are available for free.  One such course is Clinic 5935: Introducing Server Virtualization in Microsoft Windows Server 2008 (RC0)

While the naming and terminology of the Hyper-V feature uses some outdated terms, all of the major technical information should still be accurate.  This is a good place to start with Microsoft’s E-Learning and to lean about Microsoft’s upcoming virtualization products.  Thanks’s to virtualization.info for the link.