Here's a ton of links to make you an expert in WCF. OF course you have to find the time to go through all of them :-) http://joeon.net/post/2008/03/Windows-Communication-Foundation---65-Links-to-make-you-an-expert!.aspx
Get a free WCF Resource CD from Idesign http://www.idesign.net/idesign/ContactForms/MoreInformation.aspx?Service=OnSiteTraining&Class=WCF