First things first, choose a niche. You should choose something which interests you, you don’t mind learning about, or have the ability to pay someone else to write about. Consider the potential costs carefully before delving into something which you know absolutely nothing about. Another important aspect is to be confident that it will be a lucrative niche to work in. There needs to be an abundance of products to promote, and the commission levels need to be significant enough to give you a good profit each time a sale is made.
Affiliate marketing overlaps with other Internet marketing methods to some degree, because affiliates often use regular advertising methods. Those methods include organic search engine optimization (SEO), paid search engine marketing (PPC – Pay Per Click), e-mail marketing, content marketing, and (in some sense) display advertising. On the other hand, affiliates sometimes use less orthodox techniques, such as publishing reviews of products or services offered by a partner.
You should also make sure you aren't competing with your own affiliates for eyeballs. Any marketing channels you're using, such as search engines, content sites or e-mail lists, should be off limits to your affiliates. Put marketing restrictions into your affiliate agreement and notify partners immediately. It's your program--you set the rules. Or, if you prefer, you can let your affiliates run the majority of your internet marketing.