In this lecture, we can learn how to use steam tables to find the thermodynamic properties of steam e.g. Enthalpy , Entropy and other connected properties.A standard steam table in which pressure with bar and temperature degree centigrade is taken for demonstration , It is an essential to learn how to use steam table in order to find the properties of steam when we solve the numerical of Rankine cycle (The basic thermodynamic cycle on which the Steam turbines works.