According to Elise Dopson, founder of Sprocker Lovers, “The niche you choose for your affiliate site guides how much time/effort you’ll need to put into building it to a point where you begin to see SEO results. For example, SERPs for software, marketing, and healthcare are all dominated by huge blogging sites with even bigger marketing budgets. The secret is finding untapped areas where competition isn’t as fierce—and getting in there before other people recognize it.”
Affiliating to a business that has products in the market is way better than those who do not. Specifically, when talking about products, make sure that they own multiple products like HOSTNOC so that you can promote as many as you can.

Now there is a pretty high chance that your customer is using Facebook and as per research, an average Facebook user has 155 friends.
There is also the option of using paid advertising on any of the social media sites. You can always go that route if you wish, but for now, we are focusing on the free methods.