Be best affiliate

A lot of people want to just to promote anyproduct to earn some cash fast and this is a wrong way to do any business . Your way and the product must provide a value to the customer or there will no trust so how to promote right first u find a product that solve a problem then make search about it in google and youtube to find what kind of the product it is is it good or bad provide value or not
If good then promote it best way u can promote it for free is youtube you create a video on the niche that the product in providing some value first and then recommend it and build list the money in the list i will post alot each piece in post this post is just an introduction