Web Sites

SysInternals
Internals - API Hooking
Windows Hardware Developer Central
NDIS Developers Reference
Undocumented Windows NT/2000 Native Functions
Crash Dump Analysis and Debugging Portal
OSR Online
Uninformed
Open Reverse Code Engineering
CodeBreakers Journal
Virus Bulletin

Blogs

Mark Russinovich on TechCommunity
The Old New Thing (by Raymond Chen)
Advanced Windows Debugging and Troubleshooting
Invisible Things Lab (by Joanna Rutkowska)

Microsoft Resources

Windows Driver Documentation
Windows Debugger (WinDbg) Documentation

Overview of Windows File System Filter and Windows Driver Development

We've put together brief overviews for the major windows driver models in use today. Depending on the type of driver you are interested in you may find our topics on the following interesting:

Windows Driver Model (WDM) Drivers
File System Filter Drivers
NDIS Lightweight Filter Drivers
Windows Filtering Platform, TDI, and Network Filter Drivers