This chapter introduces the fundamental principles governing electrostatic phenomena, laying the groundwork for the study of classical electrodynamics. It begins by establishing the concept of electric charge as an intrinsic property of matter, analogous to mass in gravitational interactions, and elucidates the nature of attractive and repulsive forces between charges. A central focus is Coulomb’s law, which quantitatively describes the inverse-square force between two stationary point charges. Building upon this, the chapter rigorously develops the superposition principle, demonstrating how the total electrostatic force or electric field due to a system of multiple charges is the vector sum of individual contributions. This principle is extended to introduce the crucial concept of the electric field as a vector field that mediates electrostatic interactions, providing a framework to analyze forces without direct action-at-a-distance. The chapter also explores the visualization of electric fields through electric field lines. Furthermore, it addresses the practical transition from discrete point charges to continuous charge distributions (volume, surface, and line charge densities), providing integral formulations for calculating electric fields in such scenarios. The mathematical tool of the Dirac delta distribution is introduced to unify the treatment of discrete and continuous charge distributions within a single framework. Finally, the chapter discusses the asymptotic behavior of the electric field at large distances from various charge configurations, emphasizing how the field’s decay rate is influenced by the overall charge neutrality of the system. Through these foundational concepts, the chapter provides a comprehensive introduction to the static electric interactions.