Introduction to Elementary Particles is a self-contained text describes breakthroughs in our understanding of the structure and interactions of elementary particles. It provides students of theoretical or experimental physics with the background material to grasp the significance of these developments. A detailed study of properties of elementary particles, symmetries and transformations, and the standard model of elementary particles. A simplified introduction to the Feynman rules helps students learn the calculation techniques without the complications of spin. It is followed by accessible treatments of quantum electrodynamics, the strong and weak interactions, and gauge theories. Concept of neutrino oscillations and prospects for physics beyond the Standard Model are analyzed.