There are many different kind of affiliated programs in which you can make money.Some of them areIn these,Google Adsense is the most easiest to start for a blogspot blogger.Google even supports some other blog service providers like wordpress.com.Now those who made blogs in blogspot.com,go to your Earnings tab and sign up for Google adsense.
It will take upto 48 hours for Google to review your application and get back to you.Wait till they approves you.
Once you got the approval,you can start placing the ads.There are different ad formats approved by adsense.
Go to Lay out tab > click on ad gadget > select the adsense > then choose which ad format you want to use according to your placing of the ads.More about the ad types and tips about placings on the next post..
Or else you can sell backlinks in your blog or websites.There are so many backlinks selling programs around the internet.click here to do that.