Adam and Jerod invite back Katrina Owen after years away focusing on Exercism—a 100% free platform for code practice and mentorship with over 2500 exercises and 48 different language tracks. They talk to Katrina about how the platform has changed, the direction it’s taken, the backstory on the recently launched version 2, and how she plans to turn Exercism into a sustainable business. Also, what happens if that doesn’t work?!