Know what sets each program apart. Affiliate programs are everywhere online, and it can be hard to tell them apart. Each program distinguishes itself by the products it sells. Some affiliate programs only require you to post links; others will ask you to pay money to learn about how to sell the product you are selling. As the latter type of affiliate, you can make commissions by getting others to pay—by bringing other marketers into the fold. Be wary, however, of any program that asks you to pay.
Aim for quality over quantity. Having a vast network of affiliates will not necessarily help you earn more money. According to some experts, the key to successful affiliate marketing is to find the right affiliates that will drive the most results for your platform. Those affiliates may be big sites, small sites, or a combination of the two, but the most important thing is to build and maintain strong relationships with your chosen affiliates.
Your niche doesn't necessarily need to be an area you're already an expert in. You can also choose a specialized area which you're enthusiastic or interested in learning more about.Think of Oprah, she doesn't market herself as an expert, but she frequently brings other experts on her show. You can do the same in your niche, by giving other experts a platform to promote themselves in exchange for content creation.