Post graduate Studies

To be honest, I have not thought much whether or not I want to do post graduate studies. But in the case I choose to make them, I would probably do it (or them) about a topic related to social psychology, because I like to work with people and I would like to study more about how the interactions between them occur and why they responde in the way they do in different situations or with different incentives.
If I can do it, it is because I would have an economic stability that allow me, because everyone knows that studies ara expensive here in Chile or anywhere else, and when I finish my current carrier, I would have to pay for It, the famous credit called "CAE".
So, If I manage to do a post graduate, and if I do it outside Chile, I will probably have to pay for not only the studies, but also expenses in food and a place to live. That because everyone knows that winning a scholarchip is very difficult, and I have to be realistic.
Also, because I have not thought much about this, I really do not know if I want to do a post graduate studies, first I want to finish my carrier and probably get a job, so I can make a real decision based on my experience and what I would like to do next.