The Canadian Forest Fire Behavior Prediction (FBP) System provides a systematic method of assessing fire behavior. The FBP System has 14 primary inputs that can be divided into 5 general categories: fuels, weather, topography, foliar moisture content, and type and duration of prediction. In the FBP System these inputs are used to mathematically develop 4 primary and 11 secondary outputs. Primary outputs are generally based on a fire intensity equation, and secondary outputs are calculated using a simple elliptical fire growth model. This publication provides diagrams, examples, and exercises that explain the FBP System in a user-oriented manner. This guide delineates the interpretation of the FBP System's inputs and outputs and details how the predictions are derived.