The Google Adsense program is designed to give affiliated websites an opportunity to earn income through the number of visitors who access those websites. Many websites exist primarily to generate income for their owners. While using Adsense does not require any specific programming knowledge, it does require you have a computer, Internet connection and a website Google authorizes to be included in its Adsense program.
Instructions:
1) Design and construct the website you want to include in the Google Adsense program. Be sure your website falls within Google's published criteria for websites.
2) Sign up and submit your website to Google Adsense program. Once you website is approved, you will receive a notification allowing you to proceed with the program.
3) Activate your Google Adsense account. Clicking on the link in the email Google sent you telling you your website had been approved.
4) Log into your Adsense account, and retrieve the HTML code you will need to use on your website. After logging in, follow the prompts to get the appropriate programming code.
5) Copy the code, then paste the information into the appropriate section of your website. Once the code has been installed in your website, it will be included in the Google Adsense program and will start to see Google advertising appearing on your site.
Source - eHow