The document describes RAETRAD-F (Radom Emanation and TRAnsport into Dwellings--Florida), a computer code that provides a simple way to analyze site-specific soil measurements to estimate upper-limit indoor radon concentrations in a reference house at a site. The guide describes the installation and use of the RAETRAD-F computer program, including the background and purpose for which RAETRAD was developed. It also describes the RAETRAD algorithm, RAETRAD-F's operating environment, and installation procedures. It gives a step by step description of each question posed by RAETRAD along with appropriate responses. It describes the output printed and stored by RAETRAD-F, and presents several sample problems to help illustrate different options and determine proper function of the software. The different site characteristics to model sample cases and the analysis results are also described.