Best way to learn content marketing?

Hi everyone, I've just started an online business and trying to do ethical marketing to bring some traction to my product. I know how to build valuable products but I'm facing troubles in putting it in front of the right people.

I want to learn content marketing since it looks more solid and good for the long term. I don't know how to make a solid strategy for this, but this is what I'm planning to do:

- Build content about my products (tutorials).

- Build content that is not related to my product but related to my prospective customers.