I agree with BSea! The Florida springs are VERY ideal for newbies. There is unlimited viz, water temp is the same year around and you can go to American Pro Dive Shop and they will hook you up with a DM to take you to the springs and lead you. I dont work for these guys, by the way, they are just great. I have taken four newbs to these springs(one was only 13ys old) and by the time we left, they were very confident and smooth divers. Its a very unique environment. Depths range from 10-100's of feet. You can lay on your back at 50', look up and see the leaves waving on the trees above. Most have plenty of fish, Devils den has three foot catfish you can feed. Ginnie Springs is a cavern dive that is considered safe even for those that are just OW certified. Most of the springs are about $40 a day to get into, unlimited dives. There are shops at most of them as well.
I take a trip to these springs every January, I pick them even over the Keys! If you havent dove the springs, DO IT!!!!!!!!
Ginnie Springs; Manattee Springs; Devils Den, Blue Grotto, Weekeewaki Springs, Kings Cavern are just a few to name. You can stay in the city of Ocala and hit all of these springs up in your week.