Posting and editing

So. I'm getting up the gumption to post a story of my own. It's been long enough and the directory where I write is getting full. Maybe it is time to leap over this chasm into the, what do we call it? Into the amateur tg fiction publishing universe. I have a couple questions:

First: Is the ++Fiction page the right place to do that?
Second: Are you really expected to copy and paste in your whole story? or does the "File attachments" subform deal with that?
Third: How do I ask for an editor? I know that my writing is rough. A glance over by an editor would likely help me avoid too many silly mistakes.

Thanks for any hints or clues you might have.