There are never many genuine ways you can learn how to make money online free because most opportunities that come pre packaged eventually ask you to put in some cash.
Having said that, there are some opportunities that really are free and still workable. There are still others where you can buy your way in as an affiliate, via sales of the system or product you will be using . Typically you need to make 1-3 sales to earn your stripes and this can be an attractive proposition if you have no money to invest up front. In these system or any free make money online opportunity, you will have to substitute time for the money you are lacking, at least in the beginning.