You just have to sell the courses after joining just like a salesman course consist of how to do this buisness and that, strategies and all but personally you can find those videos online for free.
You get a percentage commision on selling each course its just like vestige or any other mlm but theor product now is digital .The more you sell the more you get. Apna kato fir sbka katao fir vo aage jake bakio ka kaate, jo jitne logo ka kaat payega utna paisa aayega.