Upfront investment is low to get started with affiliate marketing. All that is required is a website or blog and a presence on social media. You can work from anywhere and set your own hours. This makes affiliate marketing a great option for parents, students, and anyone else who wants to earn extra income on the side. There's no limit to your earning potential with affiliate marketing. As you drive more traffic to your website and promote more products, your income can grow exponentially. You're only paid when your efforts produce results. This means that you're in control of your own success.