I heard about this paid course from Fiverr. Two of my friends have found links to this course. I haven't heard that they earn a lot of money. But I think that now they're doing great with earnings. I've seen many offers on tutorcruncher.com for people who want to become successful tutors in various fields of knowledge. I really want to work as a music tutor for kids who want to become musicians and enter the conservatory. I play several instruments: piano, guitar, and harp. Of course, I haven't played the harp for a very long time, but at home, I have a piano and three stringed instruments that I play almost every day. I'll think about Fiverr if there's info for tutoring.