Hi,
There are a number of types of online advertising, and Pay per Click (PPC) is the most popular option. In PPC advertising, a line of text or an image is placed on your website and visitors who click on the link are redirected to the advertiser's website. You will be paid a predetermined amount for every click made on the link. Other popular options include banner ads, and lately, audio-visual ads. There are a number of advertising companies you can register on, to get ads for your page, such as Google AdSense, Yahoo, Clicksor, etc