Paid advertising — this method requires an effective combination of ad copy, graphics, and a highly-clickable link. Unlike more traditional affiliate marketing strategies, paid advertising (through pay-per-click ads) earn you money regardless of whether a reader buys the product or not. Services like Google's AdSense make this quick and easy for you, and can even supply you with an advertising code.
You could start off by doing a simple Google keyword search to find out how many people are searching for your niche of interest. Similarly, if your niche focuses on digital products, a great place to do research is on ClickBank, which is considered to be one of the largest affiliate networks online. The end goal is to find a profitable niche and run with it!
Of course you want affiliates with high commissions, but they should also have a solid reputation with high conversions and low reversal rates (you get $0 if people cancel after signing up). If they’re part of an affiliate marketplace like ShareASale or ClickBank you can see some numbers there. Companies likes Amazon/SiteGround are safe bets, otherwise do your research (or track your affiliate links so you can monitor their performance). Avoid affiliates offering huge commissions since this probably means they’re struggling to acquire/retain customers naturally. This will hurt your numbers (specifically your conversions/reversal rates).
Understand affiliate marketing. Companies create affiliate programs to help push their products. When you become a program member—which is usually free—you can make links to promote the products on your website or another site. When people buy the products through your links, you will get a piece of the profits. As a member of an affiliate network, you can choose to promote any of several thousand products. It is possible to make up to 50–75% of the profit on each sale that results from your promotion.
For those who want to figure out how to sell Amazon products and make money off it, this course on 2017 Affiliate Marketing + SEO Strategy could be ideal for you. It’s a quick course that teaches how to build an amazon affiliate website, brushes you on the latest SEO techniques but may not be enough if you are looking at an advanced curriculum. Details here.
Once you have a great product you believe and a target market, you'll need to stock a site with quality content that will help drive traffic and affiliate sales. This article has some great tips on the nitty gritty of creating your own website. Once you have your website set up, you'll want to optimized it for conversions and sales. Learn about the four qualities of an effective website.