Hi, i'm new here and i don't really know what i should be doing. I got accepted, so what should i do next?

Well, there's generally two good places to get started in, Search For A Partner, where you can check out posts by other members who are looking for partners of their own, or you can make a post of your own, asking for either a student or a monster to break you in (As it were ) You can even pitch an idea you'd like to do for a thread and see if anyone's interested. The second thing would be to use Private Messages to talk to certain people that you're particularly interested in doing a thread with. Both ways are valid ways to get started, so it's entirely up to you.