Jack, Welcome to the forum. Just go to the forum that you wish to post in, and click the link for starting a new thread. If you want to post in an existing thread, there is a text box for you to write your post in. I hope this helps.
I'm having trouble finding how to post. How do I post onto the main stream. The most recent post on it is your bf 109 model or that Ferris wheel thing. I want to post onto that.