The best option is selling courses with corsionline55

OnlineCourses55 is the best website to join and sell courses. If you wish, our platform has a wide variety of courses. We have teachers with more than 15 years of experience, committed to each course. All programs include tests and manuals, and if any course is missing documentation, we work quickly to add it. With our affiliation process, you can earn between 10 and 20 euros per sale, depending on the advertising you do.

In addition, you will find that our courses are affordable. We offer the I WANT TO STUDY PLAN, with which you can access all current and future courses on the website. This will give you more sales opportunities, since you only make a single payment on OnlineCourses55.