To become an Amazon Affiliate, you need to sign up on the Amazon Associates website and have an active website or app that complies with Amazon’s program policies.
You can promote any products that are sold on Amazon and comply with their guidelines, including physical goods, digital products, and more.
Make sure your website has enough original content, complies with Amazon policies, includes affiliate disclosures, and has clear navigation. Adding quality product listings, like those on this site, can help your approval.