Hey, sorry if this is late. You could search on google for a free forum making site. I tried one, but like I said, it didn't last long. And if you have a google Email, then that's all you need to create your site.
EDIT: I always wondered what it is like to be an admin. You just fulfilled my dream. ^_^ tyvm. I'll search first, and tell you what I find.
EDIT 2: Have you tried phpbb? It's a free forum creator. In fact, that's the one I used. I never figured it out though. I would be happy to help your forum thrive.