For a small state, the West Virginia Archives have a lot of online material. It's all somewhat chaotically arranged, but still, it's Almost Heaven...
There are materials here for everyone -- historians, teachers, collectors, scholars, students. But for family history researchers, especially, the Mountain State's digital archives are the motherlode.
The West Virginia Archives and History homepage gives a bit of an overview of what's available, but all too typically, makes it hard to distinguish online and offline content. Their collection is offered up under various headings like the History Center, Genealogy Center, Daily Trivia, On-Line Exhibits, and the ever-popular Records Management and Preservation Board.
A few standouts:
History Center arranges materials by topic, covering major WV history, events and themes (but oddly enough, missing anything about Coal or Mining!):
Take particular note of the link to Databases as these provide some powerful look-up capabilities for many of West Virginia's archives, such as:
Speaking of databases, there is a lot of lookup material for family history research:
There is also a series of On-Line Museum Exhibits, which, at the time of this writing, include
Oddly, there's a separate, but largely overlapping, list of online history exhibits as well.
All in all, a wonderful and diverse resource.