In addition to the launch of the Phones from Nokia is the launch of the Nokia Developers Program.  The program includes Tools, Documentation, Code Examples, Videos and a vibrant community to get you on your way.  Head over to the developer site http://Developer.Nokia.com/WindowsPhones  or go directly to the code samples to check them out. http://www.developer.nokia.com/Develop/Windows_Phone/Code_examples/

Examples are a great way to jumpstart the development on that app you have been thinking about.