You heard this right. If you have some kind of expertise in a certain subject/field, you can create a course and make money by selling your course. You can try Udemy to sell your course. I have seen a lot of people doing this, however, I do not have any experience. I work in a bank and I am thinking to create a course on how to become a banker. I also have some knowledge on share marketing and I want to create a course on stock trading.