1. The document discusses kinematics of machines and basics of mechanisms. It defines kinematics, kinetics, dynamics, and statics in relation to machine motion. 2. Kinematic pairs are classified based on the nature of contact, type of relative motion, and type of constraint. Lower and higher pairs are described based on contact. 3. Degrees of freedom and mobility of mechanisms are defined using Gruebler's criteria and Kutzbach criterion which relate the number of links and joints. 4. Inversions of mechanisms like four bar chains and single/double slider crank chains are explained along with examples of their applications.