I'm always looking, as an actor, for activities. I think it's far more interesting to watch what people do than what they say. You always want to watch behavior, because the dialogue as written by our illustrious leaders is great. Eminently playable.
My advice has always been to study the craft of acting if you want to be an actor. There are many great schools that teach acting. NYU being one of them.
I started really young, like 12 or 13, and then I started doing school plays. We had a really good drama department, so the kind of drama-geek stigma wasn't really there in my high school.