There's an extensive help system built into the site, with a directory of pages here: http://mathoverflow.net/helphttps://mathoverflow.net/help
By default, moderators here can edit this page: http://mathoverflow.net/help/on-topichttps://mathoverflow.net/help/on-topic and certain sections of this one: http://mathoverflow.net/abouthttps://mathoverflow.net/about (including the example question shown, although at the moment it hasn't quite figured out that there are questions here yet).
If additional pages or customizations are needed, don't hesitate to ask - it's not always possible, but we'll see what we can do.
