The cornerstone of your affiliate business is about setting up a website that's focused on a specific niche. You research low competition keywords for that niche, with the aim of ranking on page one of Google for those keywords. People visiting your site then click on a referral link, and if they make a purchase at the destination store, then you get paid a commission. That's why some people call it “referral marketing”.
Every year, hundreds of millions of documents are notarized in the United States: wills, mortgages, citizenship forms, handgun applications. While for decades, this has all been done in person, there is a budding crop of sites that allow notaries to take their services online. If you’re already a notary, you can sell your services online. Or, if you want to get started, check out the National Notary’s checklist for becoming a certified notary.
My 10-year-old son brought home a book from our park’s free library box. It was a biology textbook – teachers edition. He said it looked interesting and hey, it was free (having no idea you could sell it). I scanned it in my Amazon seller app and realized it was worth around $150. He was so excited. We listed it for sale for $130 and it sold! Going to tell him, he just made $130!