I am always trying to learn about the latest technology and love having the word FREE associated with it. If you already have your Server 2008 certification, there is a Microsoft Jump Start 2 day online class for Server 2012 coming up on 10/23-24. There are quite a few of these Jump Start classes being offered. There is an Administering Office 365 and Developing Windows 8 App Jump Start as well as a few other options. Go checkout the Microsoft Certified Connection Community.
Another great offering is the Microsoft Virtual Academy. This provides quick access to a learning path for the different Microsoft technologies that is taken at your pace.
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