Welcome to the world of googles' main player in people profiting from the internet. Its very simple to use and easy to get ahead with profits. The system is very simple. You just sign up at their adsense site and place adsense ads on your site. Now all you have to do is promote your site using all of the methods I've mentioned in other areas of this site. As you start getting traffic you'll start getting people who click on these adsense ads which create income for you. To have adsense is easy, but to optimize it is another whole story. Before signing up make sure to read and follow all of the rules in their TOS because they do ban many people for breaking them.

https://www.google.com/ adsense /

Optimizing

This is a tricky job and it never ends. There are many ways to “help” more visitors click on the ads without breaking the rules. I've lists all that you can do to help clicks

1. If you site uses margins put adsense on the Left, not on the right. It is a known fact that ads on the left margin have a 67% increase of clicks per 1000 visitors.

2. When creating your banner use the “random color scheme”. This allows the ads to change colors frequently. Four is the most you can use. This adds great chances of additional clicks from repeat visitors and visitors switching pages within your site.

3. Create your own color schemes. Don't not use the default colors. There are two ways to go about it. You can make the ads blend in your site, or absolutely stick out. Most prefer blending in the ads.

4. Be sure to consider using the “rounded edges” of ads. I remember when making the ads it was difficult to find but look for it when you are creating an adsense ad.

5. Top of the site. Adsense ads at the bottom of your site do not get as much views.

6. Use Adsense “referral” ads on a last choice basis. Referral ads do not pay much at all, so don't use them unless you have no choice.

7. Do not ignore doing SEO to your site. Adsense will be placing relevant ads to your site which will pay the most. Adsense click worth runs on a supply & demand interface therefore if there's a demand for clicks for your type of site then you'll get good prices for clicks.