I tried creating a page, but it reads "You may not edit this page." What is up with that?
The vagaries of logging in with lp to the wiki ...
Try this, and I assume you've got a launchpad account, go to any old wiki page, make sure you are logged in there.
Then create your new page https://help.ubuntu.com/community/your_wiki_name
should give you a Create a new page link