I have version 2.0 of Expression Studio. I'm working on a project where I've written the Engine in C++ .NET. I'm ready now to build the GUI component, but I want to use WPF to do this. This project is for learning purposes. I need a good online tutorial or a book that is example driven to learn WPF. As there is little information on this sort of thing online, from what I've seen, I've come here now for advice on what to read to get me ramped up on WPF.
If I like WPF, I will buy Expression Studio 3.0 or 4.0 later, but right now I'm interested in just getting the idea of the framework and being able to work me way to doing something useful with it.