Well, you register as a member (which you have done). You read the threads that are in each forum. You find a topic that you have an interest in, and then you post a reply, or post a new thread! Easy!
Welcome to the forums! So many new faces, and the forums look cool too!
Just click on post reply, and answer questions, paricipate in discussions, and just be yourself! It's a great way to meet new people, and I find that having Christian fellowship does help. Nice to meet you!