I'm also new, but I can tell you a few tips.
To update your profile, you click on your account name. That will take you to your account. Then you can update your profile at will.
Between your profile name and the community options bar, there is all the pages you pick that lead you to this page. I f you want to go back a few pages, for example, if you want to go back to the write it boards, you click on "Write it" behind "Short Fiction" and "General Discussion."
So yeah. I hope these help you!