Once you've selected your merchant account affiliate program, learn all you can about marketing, how people use the Internet, and what you can do to help attract visitors to your site and click on those links.
People are often using the Internet to learn something so start by giving them what they're looking for:
• Write articles and reviews about the different products you are selling through your merchant affiliate site
• Write an article specifically about what you like about this product, why you want to sell it, and how it improved your life
• Put some text links to the affiliate merchant site in your articles in addition to using the graphical ads they supply