Social weirdness.

I feel like i need some kind of 'social training' i literally dont know how to act with human beings. Its levels, sometimes i manage to act normal, but mostly i lose track and mess up. i dont know how to talk to workers, strangers, or even how to behave at times. i sometimes get remarks about the way i smiled or the way i looked at someone, but sometimes when i try to modify it it only looks fake. Im a gemini, is anybody here the same? and how do you deal with it? also suggest some movies related to social life.