Online learning is booming. It's a multi-billion dollar industry and now anyone can now create online courses and earn a living from it. What can you learn from people who have turned their expertise into income? The Knowledge Industry podcast, hosted by ex-BBC journalist Mark Egan, looks at the story behind online educators who have made this leap. What works with online courses? Can you really create an online lifestyle business around online teaching? How has this entrepreneurship changed people's lives? Tune into the Knowledge Industry for weekly shows about this fast-growing multi-billion dollar industry.