When I asked listeners last month who they'd like to hear on the show, Rob Cubbon is a name that came up from a couple different people. Rob's been crushing it lately between is online teaching efforts and his Kindle publishing business, and as luck would have it, is a Side Hustle Show listener himself. I've been following Rob's blog for some time myself, and have been really impressed with his journey. In fact, it's pretty inspiring and eye-opening to see some his quarterly income reports, with much of the money coming from Udemy.