Billionaire investor and Mavericks owner Mark Cuban told CNBC what “side hustle” he’d do to make money: learn scripting. Evidently, he’s already taught the skill to his three children. He said learning how to script for virtual assistants like Amazon’s Alexa, Microsoft’s Cortana or Google Home is a way for students to earn extra cash. In another story, he shared his eight tips for becoming richer, including live like a student, save six months of income and read books.