This is a great question. I had the same question 15 years ago.

I recommend you this:
1-Write on a paper what you would love to learn about. What would be something that if someone gives you 10 books about it you will read them all without any problem. What is that thing that if someone would ask you to do you will do for free over and over again.
2-Who are the people (close to where you live) that are the best in what you find out in point 1. Your "heroes". Find who they are and how they interact. Read what they write and listen to what they say. Would you like to work for them?
3-Approach them. This is a whole thing on itself! Depends on each person and where you are.

Get started !