Expertise is not really necessary to earn with Google Adsense. All you are required to do is have a website where you could display other people’s advertisement. The success of your internet advertising campaign would largely depend on the CTR (click through ratio). The adsense income would be higher with a higher click rate and therefore the webmasters should ensure that they provide some quality content on the pages in order to generate relevant ads. The colour of the ads should also match to the website so as to encourage the users to click it more frequently.