How do I delete or rename wiki pages?

Nothing too hard :)

1. Log in as the administrator or moderator.
2. Click on the link "Show all pages" at the bottom of the wiki.
3. Open up the page revisions by clicking on the plus sign next to the page title.
4. You will see "Delete" and "Rename" buttons next to the page revisions.
5. Click on the button you need.

Just make sure to also change the links you had to the pages you renamed or deleted, otherwise, they'll go nowhere.