The U.S. State Department has a Visa Waiver Program (VWP) allowing citizens of certain countries to enter the United States without a visa for stays of up to 90 days.
Visitors from VWP countries must register online through the Electronic System for Travel Authorization (ESTA) before boarding a plane or a boat to the U.S. Travelers must complete an electronic application providing basic personal and travel-eligibility information.
The Department of Homeland Security recommends filling out the form at least 3 days before traveling. Authorizations will be valid for up to 2 years or until the traveler's passport expires, whichever comes first.
If you are not eligible for an ESTA, you may be eligible to apply for a "B" category visa for Florida. The B2 visa is issued for tourism purposes, the B1 visa is issued for business purposes. There is also a B1/B2 visitor visa, which can be used for both business and tourism purposes.
Check out the full official information here: official-esta.com/