The first and in my opinion best affiliate business internet marketing online promotion is email marketing. Well, to my knowledge this holds true. Yes, you can make money in other ways, but email marketing is high above the rest.
Tip - all of the additional techniques will focus on driving traffic to your squeeze page.
A squeeze page is a one page website that has fields to capture your visitors name and email address. This is how you build a list.
Another way of affiliate marketing is with online promotion in forums. You can register on the forum in your market and add a signature file that has a link to your squeeze page. Never put a link in the body of your post.
You need to be sure to do some keyword research and include the keyword in your title as well as throughout the article content.
Blogging has become more and more popular over the past few years. Just make sure to update your blog. If people see your blog hasn't been updated for a few days they will go elsewhere. This is also useful if you have a list of subscribers because when you make a new blog post you can send them an email to let them read it.