These training materials provide an introduction to the Ensemble Framework for Flash Flood Forecasting (EF5) system developed by SERVIR Applied Sciences Team PI Yang Hong, Co-I Zac Flamig, and Race Clark of the University of Oklahoma. The EF5 is a hydrologic modeling system that allows for the prediction and monitoring of floods, as well as drought conditions. The resources available include a full training package, containing all documents, data, software, examples, and presentations.