being that you're in FLA you should be able to find a breeder near you....but you're right - those sites are full of scammers - and PLEASE try to stay clear of pet stores if you can - most all buy their puppies from puppy mills
It's hard when you're new to searching for a yorkie - there are brokers out there .. websites and unethical breeders who claim to be the best breeder in the world - people claiming to sell TEACUP yorkies (which is a selling WORD to hype the price up) etc (there is no 'teacup' yorkie technically)
you have to weed thru ALOT of hype these days to get a yorkie puppy.....
But...the upside is - there are REAL breeders with ethics out there.
Your safest avenue is a breeder who has the puppies in her home where you can visit and see how they interact with you. At the prices yorkies are selling for that's what I would do.
The net IS scary but this site has a ton of information on it and breeders too - so you should get some good advise..
ps. WELCOME to the site !