Corkscrew and Sanibel are both on the lower west coast, a 2-hour (?) drive across the state, through the Everglades, or what is left of them. Nearer to Miami (where you're flying into I suppose) is Everglades National Park itself, and it's a pleasant drive down to the Keys and Key West.
The Lane guide (ck any US birdbookstore) is the standard birdfinding reference, and Sibley East or Peterson East are the most appropriate fieldguides.
But as Helen says, there's LOTS of info on the internet. If you are flying into Miami, don't omit to spend some time in the city birding the exotics that are countable-- and uncountable, too, for that matter!
Sounds like much more fun than dour Bulgaria to me...
... al with-oute, the mewe is peynted grene, In which were peynted alle thise false foules, As beth thise tidifs, tercelets, and oules,... and pyes....
Kantorilode: Birds of Japan