Mickey Martin opened the Northeastern Institute of Cannabis at the end of September, and already he has 50 people enrolled. The class, taught by the "Medical Marijuana 101" author himself, is intended to offer enrollees 50 hours of training through the 12-course program all about working in the marijuana industry, capped by a two-hour exam. Martin is one of the many looking to move the marijuana industry from the shadows into the light of legitimacy, yet it's an initiative running into problems. "I've…