The MSDN Blogs are a treasure chest of information, and great for telling you when Microsoft releases new resources. One of their more interesting offerings are the MSDN Virtual Labs - online lab sessions that guide you through new technologies. I played with the VS2005 and BizTalk labs at the Launch event this year, and was reasonably impressed.
Today, Shy Cohen posted in his blog that "MSDN Virtual Labs for WCF are up on http://msdn.microsoft.com/virtuallabs/wcf/. These are the same labs we use in the training we deliver here at MS."
'Nuff said really - as he puts it... Playtime!