Quora user Sachin Kaushal explains the benefits of affiliate marketing:
"Affiliate marketing: Becoming an affiliate for another company's product is an extremely lucrative way of helping a company that believes in its product but is struggling to sell it. You can get a kick-back/commission for every sale you make for them.
You don't even have to advertise!
If you connect a business with a famous influencer/celebrity who can promote their product, you can be the middle man and generate income for yourself without having to do anything.
But even then, promoting other people's products requires no investment from you and is an easy way to benefit both parties. All you have to do is market & advertise for them.
I would start off by going to popular company websites such as Amazon, who allow you to be an affiliate for other peoples' products. Or even email/message small businesses and simply tell them you have the expertise to increase their revenue."