Introduction to WCF
WCF (Windows Communication Foundation) is part of WinFx technology. Its taking care of the communication between your components in you own machine and your components and the the out side world.
I was learning about this for the last two months and already took advantage of it and use it in a new project in my work.
Last week I made some introduction presentation for my team about it.The attachment includes it and some example of how to build and expose a simple wcf service
More advanced examples coming soon.