First of all, you need to have a good website. A lot of traffic has

to be coming through your website or you are not going to make any money.

So, I would say you need at least a hundred web pages within your website. Write a blog about something you are interested in and know a lot about. If you do not have any information about the subject, you probably should not be writing about it.

Once you get your blog started, with traffic coming through it

everyday, you should be ready to go. What you need to do is

sign up for google adsense. It is free and I am sure you have

heard of it. Depends on how much traffic you get, you can get

a lot of money from google adsense. Here is the link to sign up.

Just go to google and type in adsense in the search bar.