I like cars and sports, should I just start writing about cars or sports or should I try to find something that pays a lot of money?
I always suggest starting with something you either enjoy (passion) or that you can write about (knowledge). That’s not a requirement as I have websites and blogs about many topics I don’t care about including land development and butterflies (no joke).
If you’re passionate about a subject or have a wealth of knowledge that makes it easier to write. After a while you’ll be able to write about anything, in depth with just a short bit of research. Many people suggest that you find a topic that is profitable but that is counter-intuitive as anything can be monetized if you’re the leader in an industry, even butterflies.