So... as a Wikivirgin, how does this thing work then?
That's the thing about wikis - they start off as a blank canvas, and you need to add both content and navigation structure.
As reasonable first step might be to create a set of top level categories, and a set of links to articles under each category. A good place for this is the main page. You then start creating those pages.
I'm happy to do that part, if it will make things easier.