Making money with a Blog website?

I am new to SEO, but have made 2 website 9 months old and 3 months old that are getting 25k visitors a month and there are people calling me for the service.

I had no clue it would go this well.

I am about to build a news blog next and a personal blog on my hobby interest. How do a transform the traffic to income? I am googling and asking to find out the how? I would like to know some basics before I launch site so it is already aiming in that direction no matter how it goes.