Where is a safe place for me to experiment with editing wikitext?
Your personal User Page (click on your name at the very top of the page) is usually a good place to start. The Wikipedia has a sandbox that includes a guided tutorial, although note that Wikipedia is on a newer version of the Wiki software, so there may be some differences. The ISFDB wiki has its own Sandbox, which anyone may use for tests or experiments, although it lacks the tutorial that the Wikipedia sandbox has. Another good way to learn is to pick a page and click the “Edit” link to see what the existing wikitext looks like.
