Specific heat of gases, molar heat capacity at constant volume & constant pressure are the next main things.
Thermal expansion - of solids, liquids, and gases are important. Further, go over Boyle’s Law, Charle’s Law of volume, and Gay Lussac’s Law of pressure.
Using all the laws, learn how to write gas equations.
With all this basic knowledge now read the topic Kinetic Theory of Gases.
Under this topic, know how to arrive at an expression for pressure exerted by an ideal gas, average speed, degree of freedom, & law of equipartition of energy.
Thermodynamics- its definition, isothermal, isochoric, isobaric, adiabatic and cyclic processes are also important.
Laws of thermodynamics and their applications, Propagation of heat & conduction are few main things.
Nonetheless, do not ignore Newton’s law of cooling, radiation, emissive power, and absorptive power.
Give a final touch by reading some important laws - Kirchoff’s Law, Wien’s Displacement Law, Stefan’s Law, solar constant & temperature of the sun.
And you are good to go. Revise all the points again a day before the exam.