some history time

I always wanted to study history but I have never known where or when, if I want to do it like a career, hobbie or postgrade.
The part that I love of history as a subject is mainly latin american history, or social history of the countries of America in general. I really want to know what has happened between the years and political institutions and how people remaind it. The culture has a reason to be, and I want to know why we are here now and how we get here.
I would like to study history as a career, that last like two years in Universidad de Concepción, in Chile because I feel that being in south of Chile I would be more peacefull because I can make my own space there that need to be between a lot of our history learning our own social fights and that kind of weather and people.
I would like to do it after I end this career so I can be more independent and enjoy better my time there. As I said in the begining, I don't know how to study history because maybe I can do a a shorter program than the career itself and more specific, although I might want to know it all.
Anyway I'm on first year so left four, maybe I change my mind and finally study another stuff or minor.