Many online businesses make money selling their own products. You can create an e-book that teaches others how to make money online. You can also make money by creating a how to guide and making it available for download for a small fee. Another way is to create video courses showing people how to do things like making money and sell this as a download. It can also be used as a product for a monthly subscription to your website. You can offer the series of courses to be available as a recurring monthly subscription where as long as the user has a current subscription they have access to your useful informative videos and how-to archives. This is one of many ways that you can make a decent living selling your own products online.