"Introduction to Quantum Mechanics" provides the foundation for much of one's future work in atomic, molecular and nuclear physics. The topics included in this book are various experiments that laid the foundation of quantum mechanics and discusses the Schrodinger wave equation, General formalism of Quantum mechanics, Particle in a box, The Step potential and Potential barriers, Angular momentum, Hydrogen atom, Harmonic oscillator, Approximation method for stationary state, Time dependent perturbation theory, Semiclassical theory of radiation, Atoms in external field, Scattering theory, Identical particles.