To make money with AdSense or any other PPC system, there are three very important things that you must have:

Lots of Visitors or Traffic.  The more traffic you get, the more you will make from your ads.

Lots of Clicks on your Ads.  The higher your CTR, the more you will make..

High payout for each Click.  The content on your pages and the keywords you use will have a large impact on how much you get paid per click.

For the remainder of the topic on this page, I will address the second item:

How do you get visitors to click on your AdSense ads.

The other two items, Building up your Traffic and Getting a High Payout per Click will be addressed in topics on other pages.