Marijuana Business Workshop. Two day CannaBusiness seminar in Tampa, FL. Saturday 12/13 & Sunday 12/14, 2014 10am-4:20pm. DAY 1: Florida Marijuana Laws & How to start a Dispensary. If you would like to start a dispensary in Florida or a grow operation, this marijuana workshop is for you. Our attorneys, accountants and industry professionals will help guide you in the right direction, with all of the regulations and licensing requirements.