Advertisers pay Google when someone clicks on their ads which are placed on your web pages.  For example, if your page content is about lawn mowers, you will likely see ads from lawn mower manufacturers and/or retailers on that page.  When someone clicks on those ads, the advertiser pays Google and Google pays you.  Of course, the advertiser is hoping the person that clicked on the add will actually purchase the lawn mower or whatever they are selling.

The Google Adsense rules

In fact, Google is very strict about the integrity of this process.  You are forbidden to click on your own ads.  If you do, your Adsense account will be terminated and you might never get it back.  You are also prohibited from asking others to click on the ads on your web pages.  It makes sense.  Why would advertisers want to pay if the onewho clicked the ad is not really interested in purchasing the lawn mower or the product they are offering?

Go by the rules 

The good news is that you will make money just going by the rules.  Have or write interesting content that will turn up in search engines and you have the right people to read those ads.  Just think, somebody in Indiana buys a lawn mower and you get a commission!

Observe Google Adsense rules! Read these rules from Google web site from time to time, as these rules keep changing from time to time.

The proper way to go  

Your time should not be used on trying to trick Google Adsense. Your time should be used in optimizing your site for better site content, so that you will get more valid clicks as well as referrals.  That is the proper way to go.