One of the key changes in process design has come through increasing reliable and publicly available methods and data bases that allow the engineer to model essentially all relevant physico-chemical properties of a vast number of pure components and their mixtures. Currently available data and methods stretch far beyond the initial applications limited mainly to the petrochemical industry into a wide range of chemical, biochemical, mineral, polymer and even nature-based components. With this, processes from chemical application through agricultural, food and environmental processes to a large variety of energy applications can be modeled with sufficient confidence in the simulation results. Our training will establish or augment initial thermodynamic basics to make the trainee confident in using the property methods for their applications. Understanding the various methods from first principles will limit systematic errors in property modeling and provide a basis for venturing into new fields property modeling.