All I do is log on every day, often about three times a day, read new posts and scan through old threads.
You can add ppl as friends by clicking on their username and following the instructions. I'll add you now so you can see what I mean.
Then you post away! You have to have so many posts before you get a longer signature (the bit beneath your message -just in case)space and it may be the same with your profile (which comes up when you click on your own name)usage.
Just post like crazy as I do, and ask ANY questions, share ANY thoughts and you'll soon find your way about.