Explore the foundational principles of modern solid state physics with “Solid State Theory, Volume 1: Basics: Phonons and Electrons in Crystals.” This essential textbook, perfect for “The Bookish Owl” readers, assumes prior knowledge of classical mechanics, electrodynamics, quantum mechanics, and statistical physics. It introduces the crucial formalism of second quantization for many-body effects and delves into classical areas like phonons, electrons in periodic potentials, the Bloch theorem, Hartree-Fock approximation, density functional theory, and electron-phonon interaction. Ideal for Bachelor students seeking to deepen their theoretical physics understanding or prepare for a thesis, this volume also equips experimental solid-state physicists with vital theoretical methods. It serves as a strong basis for Master’s level modules in Physics, preparing you for advanced topics covered in Volume 2.