How about learning photography? Is it too late to learn photography at 24?

I don't think it matters what you study. The key depends on how interested you are in this matter and how much you are willing to pay for it. What friends give you is reference advice. If you are not interested in photography, I suggest you choose a career you love. It's never too late to study 24 hours. If you are willing to pay, I believe you can start in a year. Think it over before you decide.