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.