How to edit pages
Obviously you need a user account - ask betabug for this if you haven't got one or you are slacking too much to remember your password.
Once you've got that, add /editform to any page URL. That will send you to the https virtualhost, ask you for your login, and then drop you off at that pages edit form. Once you've "previewed" or "edited" any page in that manner, you will see a small form with edit options at the bottom of each page.
Pages are edited using ReStructuredText. A RST cheat sheet is online at the papaki. But it's so easy, even a cow can do it!