Blogging!!!

I was inspired by a post in a forum somewhere about blogging to earn a living. Pro bloggers are living their life. They are taking all opportunities that the web can offer. And ever since I started an online journal last June, I got to read more about how this works. I don't think I'll lose anything if I tried. All I need are 20 posts, 90 days, and a Paypal account. Now how do I do that exactly?