Again, a big welcome to you. Just read the various threads and become familiar with the different sites; you'll get to be a pro in no time! It's really a lot of fun and you'll definitely learn a lot. Enjoy your time here.
You'll get the hang of where everything is located here after a short while. There's a thread about forum FAQs, so I'm sure some of your questions will be answered there. I too found it confusing when I first joined, but I picked it up in no time at all. I'm sure you'll be just the same.