I learned by watching my favorite shows. I would just rewind and say the words back, until they sounded right to me. I never studied the American accent, in terms of getting a teacher or taking phonetics classes. I've always been a good mimic. It really wasn't that hard for me.
I was a mimic when I was a child. I mimicked the teacher and made friends that way, actually. That was a very subversive activity, because I was a goody-goody who never got in trouble. But if I went off in the corner and mimicked the teacher, people loved it.
I guess if you have an original take on life, or something about you is original, you don't have to study people who came before you. You don't have to mimic anybody. You just have a gut feeling inside, an instinct that tells you what's right for you, and you can't do it in any other way.
I spent three months with a physical therapist understanding what a stroke is. I asked, 'What is a stroke?' I didn't really know. It's okay to mimic something, but I really needed to understand the signs.