It is great to hear that you want to continue your education and diving. I would start by taking your EFR class. For one it is required for divemaster and master scuba diver and 2 you will have the knowledge to help a fellow diver or person you may come across on the road that may need help.This can be taken at any time and is a great course during the winter months. As for dive shops i use south beach divers in miami. its only about an hour from key largo and have a friend that is an instructor there.send me an email and i`ll get you his name and number if you are interested. happy diving