How to Earn in Affiliated Marketing?

As technology grew faster day by day so thus marketing. Most of the time when we hear the word marketing a thing that come in our mind is money. So technology has been a great help to everyone specially for those people who rely on the internet to make a living. One mean to earn money using the net is affiliated marketing. So how does this work?

Affiliated Marketing, based from my research, is like promoting a product but this product is either yours or someone else's. You're like an advertising agent that targets to promote a certain product to the maximum people possible. So how do you money you ask? Simple! Commissions, a certain percentage of the sale made by purchasing a product promoted by you will generate money for you. Some consider this as a passive income since some people just post ads in the net and when a customer purchase a product because of the ad the one who posted the ad will earn money. There is actually no limitations on how much money you can earn in this kind of service.

Some websites that allow affiliated marketing programs are Lazada and Google. Though I'm not really sure on how to join the program I'm pretty sure that they allow people to be an affiliated marketing staff in this sites.

So what other things do you know about this kind of stuff or did I say something wrong about the topic? Feel free to reply! Thanks!