This resource includes the historical perspective, introduction to the various aspects of Seismology like stress, strain and Equations of motion, wave equation, P and S-waves, Polarization, Plane waves, nomenclature of body waves in Earth?s in- terior, dispersion relation, The wave field - Snell?s law, Fermat?s Principle, Ray geometries of the wave field, Travel time curves and radial Earth struc- ture, Surface waves, Rayleigh waves, Love waves, Sensitivity kernels, Excitation of surface waves, Dispersion: phase and group velocity, Dispersion curves, and Seismology - free oscillations.