I Want to Focus on Developing Blogs Again

I already have a job as a cashier in my uncle's coffee shop, but I am fully aware that the wage does not suffice my needs. Furthermore, working here unfortunately can not expand my career, you know. I have been applying to a lot of companies and yet I am still jobless for a moment.
I have been thinking to jump into a business but I am not strong enough in capital. Besides, what kind of business should I run?
Then I try understanding myself. Yeah, I think I should start developing blogs again to make money or doing some online marketing like selling people's product and then get a piece of cake.