Download

WDK and WinDbg downloads - Windows Hardware Dev Center
https://developer.microsoft.com/en-us/windows/hardware/windows-driver-kit

MSDN

Windows Driver Kit (WDK) - Windows 10 hardware dev
https://msdn.microsoft.com/en-us/library/windows/hardware/ff557573(v=vs.85).aspx

公式サンプル

Microsoft/Windows-driver-samples: This repo contains driver samples prepared for use with Microsoft Visual Studio and the Windows Driver Kit (WDK). It contains both Universal Windows Driver and desktop-only driver samples.

Japan WDK Support Blog

WDK/DDK – Japan WDK Support Blog
https://blogs.msdn.microsoft.com/jpwdkblog/tag/wdkddk/