Hello, i'm new here and i was just wondering what do i do here?

You can post questions and also answer some questions

well first, u put that where your questions go, but to ask questions, you need points, to get points, u answer other peoples questions, and with enough points I think, You level up from some certain standing on your account or something, if there are two answers on your question, then you get the choice of giving someone a brainliest answer, meaning it was the best, brainliest gives them extra points I think, or something, prolly just a good feeling of their self esteem lol