1. Learn as much as you can before starting your first serious job. Because once you are in production, you are not as much learning new concepts as you are copy pasting, fixing dead code and getting stressed by deadlines.

2. Aim as far as possible and believe in yourself. Facebook or google might comprise of a billion lines of code, but it's not like you can't understand all of it if you gave it your 100%. Be it a weird but amazing looking design or a simple looking calculator, you can figure it out if you are curious and dedicated enough.

3. Learn to google.

4. Don't let assholes berate you. And you WILL meet a lot of assholes in this field.