If anyone can help me?

Hi guys, I have previously used this site but something complicated and I stopped to use. Now I'm back again to have a chat with people on this site, or maybe to play a game togheter. In any case I do not want to make a mistake, so if someone can explain to me the rules of the site and tell me how you collect points, or tell me where on the site to look at the rules I'd be grateful. And if someone can tell me why when you ask a new thread does not get points? Thank you in advance!!