SMWiki: Simply register (top right corner) and then start creating pages. Please make sure they contain the appropriate details and such, and that there are no formatting errors. If you need help, you can contact a Wikiministrator, or read the comprehensive Wiki help guide which is linked on the main page.
At the current time, here is a list of the administrators of the SMWiki:
Contact someone from the above list if you have any issues or vandalism to report.