Hi Tundra! Welcome to ATP.
Probably most members will answer here rather than by private email so that others can come by and read the answers, add to them, and discuss them. That way it's a resource for everyone.
My own approach would be to start with annual flowers. They are easy to start from seed and often fairly cheap to buy as small plants. Annuals usually have more flowers, bigger flowers, and they can bloom for months instead of weeks.
I don't know Florida at all, so these may not be suitable for you. Or maybe each has some varieties that can tolerate heat, humidity, insects, fungus and mold.
These are just some of my favorites, meaning easy and flashy.
Marigolds
Pansies/violas (but they like it cool!)
Alyssum (low, floppy vines, usually white. They re-seed, so they act like an annual if you put them in beds)\
Lobellia (small intense blue blooms)
Sweet William (Dianthus)
Cosmos
I wish I could say "go to a local nursery and take notes on what is well-suited to your climate". Actually most nurseries stock whatever they can get someone to buy. It might die on the way home in your car, or become invasive and take over the county, but if they get their 50 cents profit, they'll do it agin next year.
If you can find a plant sale by Master Gardeners or a church group or school group, you are more likely to get WISELY chosen flowers!
