Well, I see you already figured out how to post.
There are different areas from different things.
Bible discussion is for debate and bible related questions
Miscelaneaous forum is for stuff that dont fit in the others
Prayer requests is obvious
There is also a family forum , mostly used for asking advice
to chat, click the banner to get a menu beneath it with some drop down boxes
select if you want to use can and mic, and click chat now