There are various ways to promote affiliate products. Article marketing is one of them. I think article marketing is the best way to promote any affiliate program easily, and it is also free of cost. So it is very interesting thing that if one writes articles regularly to promote his products and chooses the profitable affiliate products correctly, he can earn huge amounts of money through article marketing.
For affiliate success you only need to find out what affiliate programs are giving high profit and which products are in high demand to customers. After selecting a product you need to know some information about the product that you are going to promote.
Now write some articles about your product such as how to use your product, what is the benefit of your product etc. Make a click able link in your article resource box, so that your article readers and search engine can follow the link to reach in your affiliate product site. After writing your article you need to submit them to top popular article directories according to your subject.
When all of your articles will be published then you will get some targeted visitors to your affiliate program site and this way you will be able to sell your affiliate product. Article marketing also helps your site to get high rank in Google search result.
In this way if you continue writing articles and submit them to article directories regularly then you will be able to promote any product. Carry on your article marketing and promote your affiliate program now. You can also market your product by Google AdWords but to me submitting article is the best way for marketing.