Affiliate marketing can be broken down into different levels of involvement: unattached, related and involved. Unattached affiliate marketing is a basic pay-per-click affiliate marketing campaign that requires little to no involvement with the product you are promoting. Related affiliate marketing requires you to have some authority and content on the product you are marketing, but you don't personally use the product. Involved affiliate marketing is perhaps the most effective, as you'll be marketing an affiliate product that you actually use and enjoy.
Udemy.com – Udemy is an online training platform where “instructors” can create courses and sell them to “students”. There are some extremely high-quality courses on Udemy created by high-quality instructors who really have made a lot of money online, but there are a lot of very low-quality courses as well. Most of the higher quality courses are quite expensive, sometimes exceeding $100. While the training might be good, the training on Wealthy Affiliate is excellent as well, plus you get all the tools, community, and support included as well. Once again, I believe Wealthy Affiliate is the better option.
When one of your customers makes a purchase, you purchase the product from a third-party company (the drop shipper, usually a manufacturer or wholesaler) for a lower price. This process is as simple as forwarding the order from your customer, a process that can actually be completely automated. (Remember you don't have any risk here of buying inventory because the sale has already been made).