Affiliate marketing allows you to recommend products and services from other companies and be paid a commission if someone buys the product as the result of your recommendation. To track which purchases happens as a result of your recommendation(s), the merchant will provide you with a special link to use when linking to their website that contains a unique referral code assigned to you. If people click that unique link, and buy the product or service within a specified timeframe (the timeframe varies depending on the merchant), you get a commission on the sale.
Whether you have a website or are still dreaming up ideas for a blog, you can also look into affiliate marketing. With affiliate marketing, you partner with brands and businesses within the content of your website. If you mention a product or service, you link to that produce or service using a unique affiliate code you received when you signed up for that particular affiliate program. From there, you’ll make money any time someone buys a product or service through your link.