[annie_cash]

Welcometo the board. Basically you have to set up a blog (e.g. Wordpress) and write about some niche you're into. You can offer original writing and free stuff such as movie samples, pictures, galleries, etc. You can also place banners of the sites you promote on the sidebar of your blog.
Then, you promote your website; send it to blog listing sites, apply SEO strategies, make link trades with other webmasters, etc.. After some time of regular writing and rich posts, you gain traffic. If the traffic is good these surfers will click on your ads and eventually you will start making sales.