Now that's just one way to make money with your blog(https://tinyurl.com/start-blog). Suppose you don't have your own product but you have something you love to do and you know a lot about it or you have something you want to learn more about and master it, well that could be what you write about and start providing information to people about the subject you are interested in. There are many websites that offer you the ability to market their product and make a percentage of the sales, like ClickBank or Commission Junction (just to name a few). Many of these websites offer this ability to market their products for absolutely free.