No need to feel scared! I suffer from social problems myself, and having autism doesn't help that either but here you should be accepted just as you are. Welcome by the way AdjectiveNoun!
I started with Pokemon extremely late when it came to the games, given 3rd Gen was where I started playing the games but I have been a general fan for longer than that. No matter what tickles your interests, there's sure to be something you'll want to get involved in during your time around the forums and I'm sure your social issues can be overcome in due time.
I'm always open to accept you as a friend so feel free to leave me a visitor message or a friend request whenever you feel like it. Have fun and I'll be seeing you!