Windows Mobile Documentation on MSDN

Sources of Windows Mobile reference documentation on MSDN:

Smart Device Development

Provides links to information about using Visual Studio to develop software that runs on Windows CE-based smart devices.

.NET Compact Framework

Provides information about the smart-device development framework that brings the world of managed code and XML Web services to devices.

Windows Mobile Developer

Provides updated news, links, information, and programming tips about Windows Mobile development.

Windows Mobile Dev Center

The home of Windows Mobile development on MSDN.