Some great MVA JumpStarts have been published on Channel 9:
Getting Started with PowerShell 3.0
Jeffrey Snover and Jason Helmick
http://channel9.msdn.com/Series/GetStartedPowerShell3
What’s New in System Center 2012 R2
Symon Perriman and several presenters from the System center team
http://channel9.msdn.com/Series/SysCtr2012R2
What’s New in Windows Server 2012 R2
Rick Claus and Corey Hynes
http://channel9.msdn.com/Series/NewInWS2012R2
Move to Hybrid Cloud with System Center and Windows Azure
Pete Zerger and Matt McSpirit
http://channel9.msdn.com/Series/hybridcloud
Enjoy!