How to earn money via blogs?

you must be thinking how did these website owners get rich?

I'll tell you how.
They earn money through google.
you just have go to blogger .com create a famous blog and activate ADsense in your blog.
you;ll have to register in it and give your necessary details about you.
Then you will start recieving checks.

What google doesto give you money?

Google publishes ads. on your website and the sites give them money for the ads.
they keep their profit and the rest is given to you through checks.