This is kinda the FAQ of the wiki, but it's still wip (work in progress).
Question: How do I create a new page?
Answer: Just navigate to the TALK-section of the needed page and write down there a request, in which you mention, why this page should be created. An admin will answer on the request as fast as possible.
Question: Why my change had a rollback?
Answer: Probably you wrote some FALSE informations in to the page.
If you have any more ideas/questions for the FAQ, just write them down at the TALK-page of this page.