Non-Technical Support Forum

Hi, I'm super new here and trying to learn my way around. I like the Newsfeeds, they seem to have current topics and some writing prompts. It's great reading things posted there. Some questions I have:
-What other forums are here to read what people post?
-Can you follow a writer you like and how would you do that?
-If I put writings in my portfolio, does it also get posted somewhere like a newsfeed? If not, how do others see it to comment?

Thanks for any help you can provide.