How to sell marijuana without getting arrested

There’s no business like canna-business! Johnny B. talks to Bob Calkin, president of the Cannabis Career Institute, who’s holding a daylong seminar to teach people how run their own medical marijuana business when the drug becomes legal in January.


Jars containing various strands of medical marijuana sit behind a display case for awaiting patients Wednesday, May 15, 2013 at the River Rock Medical Marijuana Center in Denver. (Anthony Souffle / Chicago Tribune)