what is affiliate marketing and how can earn mony

How can you make a lot of money using it if you have a YouTube channel or a WhatsApp group or a Facebook page whether you are a housewife or a student you can make money sitting at home in our own country  I have a lot of e-commerce websites from where you can buy any goods online like Amazon Alibaba DRAZPK and there are many more websites that run a program AFFiLAT if you become a member of them.  And it's all free membership so you have to SELL their product they give you commission you just have to do that anyone.  You select the product and you copy the link and share it on Facebook or WhatsApp or anywhere. Anyone who buys from your link
will get paid -----