In this class I shall explain what is thermodynamics and its application in everyday life.Then I shall teach about basics of thermodynamics , such as Intrinsic and extrinsic properties, thermodynamic system and surrounding. Open, closed and isolated systems. reversible and irreversible process, path and state function, a little bit of calculus, as much necessary for B.Sc. Class. perfect differential and its criterion, first law of thermodynamics and explain why reversible work is always greater than irreversible work.  What is thermodynamic work, if it is a path or a state function? Deduce Mathematically.Mechanical work, electrical work  and other form of works. What is internal energy. Its significance in thermodynamic processess. If is a path or a state function. Joules experiment and its significance, about Cp and  Cv of gases. Deduce Cp-Cv=R. Adiabatic and isothermal process and their differences. Equations related to adiabatic and isothermal work. Tell about spontaniety without free energy concept. Finally workout sums on each topics stated above.