Glad to hear of your excitement. As a developer, I have to agree that databinding is one of the nicer features of WPF...it is great to program to your data, and have the UI take care of itself.
A few links that focus on Data:
Data Binding Overview (MSDN)
WPF Hands on Labs (including one on databinding)
By the way, WCF does work with WPF in .Net 3.0, however, when you want to run your WPF application as an XBAP (xaml browser application) that runs in the browser), it requires that all code can run in a partial-trust sandbox. Much of WCF couldn't run under
that environment in v3, however .Net 3.5 will have a WCF that can...