The American airline
Virgin America , owned by a conglomerate of companies Richard Branson, teamed up with The Teaching Company, which produces
The Great Courses , in an effort to
offer passengers the possibility of self-education during the flight.

During the flight, passengers are offered a wide choice of topics from the recorded lectures, ranging from the structure of the universe to the history of cooking.
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Movie lovers shouldn’t panic; Virgin America’s entertainment system offers each passenger its own touch-screen monitor mounted in the seat back. In the presence of more than 20 films, live television channels, Google Maps, video games and a music library containing several thousand pieces of music. The system also allows you to view a unique GoPro channel with exciting videos from GoPro users around the world.
In-flight courses, of course, are free, although some are worth a lot of money on
The Great Courses website. Many courses can be downloaded at a significant discount. In general, there is a very flexible payment system. I think that you can try to find some courses laid out by users for free, but only for reference (piracy, you know). Great Courses exist in both audio and video format. For those who are interested in the subject seriously, exactly as for the listeners with as yet not very good English, a printed form in PDF format has been developed. Experts recommend Great Courses to everyone to conquer the peaks of international exams,
TOEFL and
IELTS in particular.