Much has been written about Key Largo and its tourists attactions on the internet.  Here's a place to start your search, tempered by guides like Trip Advisor that are unique in the fact that they bring many different inputs for one to read and compare before their trip.

The 'Official' Key Largo in the Florida Keys web sites are as follows:

• VisitFlorida USA This is the State of Florida's main tourist site for Key Largo through Key West
• Key Largo Chamber of Commerce This is run by the local business chamber in Key Largo. Also has links throughout the Keys
• Florida Keys and Key West  This is the Monroe County main tourist site, covers Key Largo through Key West
• The Florida Keys and Key West This site is the most comprehensive guide to the Florida Keys and Key West
• The Florida Keys Getaway Connection This site has some very useful information
• Florida Keys Vacation Rentals This site has vacation rentals by owner and also by property management companies
• Florida Keys Scuba Diving and Snorkeling Everything you need to know about diving in the Florida Keys and Key West
• Florida Keys Sport Fishing All about fishing in the Keys and Key West
• A Keysey Guide to the Florida Keys Lots of good information on this site!