Yep. There may be a better way, but at the very top left is a large blue tab entitled "Forums". Click that and you will get a list of forums. Pick one, and on the far left of the screen is something like Post a Question, or maybe New Threads. Something like that, anyway. That should get you in business.
With six posts, you should be able to post anywhere, but you might have to wait on a system update. As of now, that's about a ten minute wait. Till then, your choice of forums is, well, limited.