What is a good resource to get started with Windows file system driver development for a newbie?
Windows NT File System Internals by Rajeev Nagar.
OSR Online's File System Resource page (and OSR Online in general):
The NTFSD mailing list/forum (also hosted by OSR):
And starting with Vista, the Windows Driver Kit (WDK), which used to be called the DDK, now includes the Installable File Systems (IFS) Kit:
Just a heads up - Windows file system development is extremely complex because the file system is tightly integrated with the Windows memory manager. It's the kind of thing that people dedicate careers to. Just so you have an idea what you may be getting into.