How can I use or activate Google Ad sense to start earning money?

    

To sign up for AdSense, simple visit the website and fill out the form. It will take a few days for your account to be approved so you can begin earning money.

when you account is created and approved, just take the code and paste it in your page, after that when ever some one comes to your page he will see ad, and when he clicks on them, you will earn