According to The Great Courses, their learning experiences are more than you can get in a lecture hall. Customers are free to choose their course subjects and even select professors. The company creates everything from concepts to custom content and visual design. The courses you receive are exactly what you need. You don’t have any homework to do and there are no prerequisites necessary. You get the content any way you like: digital, discs, video or audio. If the course you receive is not satisfactory, you can exchange it for any other course of equal value at any time.