I would start by going on the internet and looking up Florida Business.
With in that heading there are sites to guide you for a business license, resale license and state incorporation. If you incorporate your business it provides you with a certain amount of personal protection.
ALSO
Ask around and find a good business lawyer, accountant and insurance provider. Put things in the business name not your own.

You might contact a franchise co. like Starbucks to see if they would send an info packet (don't tell them you are thinking of opening your own shop)
The info they might send could give you some ideas about operating costs etc.

See if the local collage has a small business course.
There had been a TV series on PBS called Growing a Business and you might be able to find it.

My wife and I had our own business for 15 years but 9/11 screwed things up enough that we closed up shop. We manufactured a product that was primarily sold in the tourist market.

I'm a stationary engineer also for 29 years now

__________________
1983 300SD
200000miles