Well, everyone else who's replied here has already driven the point home, so there isn't a whole lot I can add, but more assurances can't hurt. You'll be among friends here; this is a very accepting community. After all, most of the people have either been through or are currently dealing with very similar problems to your own. We understand the kinds of things you're going through, and because of that you can rest assured that people will make sure you know it.
Everyone is uncertain of themselves at some time or another. As has been said before, you don't have to worry about that. Tons of people here have massive social phobias, which puts you on a level playing field at worst, and actually gives you a mutual understanding and a way to connect with others at best. Even those who don't have them still understand them, and furthermore care enough to actually make an effort to include you.
As for feeling at home, well... What do you feel so far?
Just put yourself out there; there are those that will notice even if it doesn't always seem that way. All of us around here are still unique, but we're all alike in the ways that truly matter; that will make all the difference towards feeling understood.
Thanks a lot for your input, for me there cant be too much of aussurances in opinions and thoughts so all is welcome!
By logic I have of course ended up at the right place, and I like it here and feel it has potential to be a new internet addiction for me to hang around.