I'm not a good creator so probably I can't give best advice here. Introduction is for the first appearance so a good starter for series about yourself.
That tag is good for personal story, I'm not sure if it's good for FAQ (might be too long, too boring)

For example I don't care about LGBT topics at all, I'm looking for a good content, such as interesting story. Yours sounds promising. Then I guess I will have questions that I'd like to find answers for, some of them for sure are from "Frequently Asked" cathegory.
Where to put that?
I don't know.
Current UIs doesn't really have anything but simple user profiles.

Separate post that you could reference to later on?
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