This course covers basic theory of Solid State Physics for engineering students. It will provide a valuable theoretical introduction and an overview of the fundamental applications of the physics of solids. Specifically, this course includes theoretical description of crystal and electronic structure, phonon (lattice dynamics), electronic behaviors, and optical properties of different materials (metals, semiconductors, dielectrics, magnetic materials), based on the classical and quantum physics principles. Some advanced experimental data of X-ray diffraction, Raman Scattering, etc., will be analyzed.