Hello, Hepcat and welcome
When you open the forums, you will see a list of different forums on the left starting with 'viewfinder' which is a general forum and sort of the social place. When you open that or any other forum you will see a list of threads in chronological order with newest first, except for the stickys. If you open the viewfinder forum, the second sticky is a welcome thread where many but not all introduce themselves.
Also, when you open a forum such as viewfinder or 'help' or 'photo-critique or any of the others, at the top of the list of threads on the left is a blue button saying "new thead"
Click it and you will be starting a new thread.
Since I don't know what your question is, I can't tell you which forum to post it in but don't sweat getting it in the wrong one as one of our helpful moderators will move it for you if necessary.
Good luck and hope to hear from you.