people who visited the site but did not opt in > you can use negative audiences for your ads with facebook ads, you just take visitors to the site and substract the people that visited the thank you page. For people who did not purchase, you simply can’t with affiliate marketing unless the vendor adds a conversion pixel of yours on their thank you page.
English is rapidly becoming the most dominant language in the world. That means the demand for English teachers in other countries is far outstripping the supply. One of the most common remedies to this situation is to hire online English teachers and tutors. The best part is that becoming one of these tutors is a great way to make money from home online!