As an affiliate your primary goal is to make a commission on sale of a product you are re-selling.
However, it is important to know best method to getting this result. For affiliate best method may be different than for direct seller.
As a direct seller, selling up front without getting to know your visitor is a viable option. It does work, however it relies heavily on a well-crafted sales letter.
For an affiliate, there is another way to ‘get sale' and it involves getting to know your visitor before they buy through you.
With this method you develop your web site to be as content rich as possible. Articles, newsletter archives, tips and advice.
Then visitors visit your site to read valuable content, not to buy from you.