See the MediaWiki User's Guide if you need help with the wiki.
The only rules are:
1. Be nice. You know what I mean.
2. Please register with your real name and don't post anonymously.
3. Don't violate any laws, including copyright, even if you dislike the law.
4. Ask for help when you need it, give help when you have it, and have fun.
Note: If you want to add extraneous comments to "hub pages" (e.g. this one), go edit the corresponding ":talk" page. If you want to make an actual Weblog, ask me to create a special page and then you can chat away! But please keep this well above the level of Twitter, OK? Cheers -- Jess