Get started withWindows Mobile 5.0 Dvelopment
If you want to get started in Windows Mobile 5.0 development. The best place to start is in the Introducing Windows Mobile 5.0 section of the Windows Moile Deeloper center.
There you'll find out all the new API's, get details on and download the tools you need and get some technical white papers for common questions and answers for developers.
If you can download the tools - you can order the Windows Mobile 5.0 Developer Evaluation Kit.