About WPF!

Hi,
I am a novice in WPF. Though I have a good hands on experience in Windows Programming with C#.Net 2.0. now I think its time to move to WPF or atleast start!
I googled a lot and got the idea of the capability of WPF.
I have VS 2008 with .net framework 3.5 (No service Pack).
I am interesetd to know about WPFTool Kit. What is it? How to add it to my project? And how to apply themes in amy APF page? Do I need to have SP1 for applying themes?
Thanks,
Regards

re: About WPF!

Windows Presentation Foundation (WPF) provides developers with a unified programming model for building rich Windows smart client user experiences that incorporate UI, media, and documents.
Getting Started
MCTS 70-502 WPF exam book
WPFTool kit are components that you can install and use in your projects.