Fundamentals of Telecommunications & Networking for IT is specifically designed for those involved in the IT field as either a student or a working professional. It presents basic communications theories in a manner that intentionally avoids the lengthy mathematical derivations found in similar texts designed for the electrical engineering student while providing easily understood equations and concepts necessary for the understanding of telecommunications concepts. The first part of this textbook covers basic theories in electricity, electromagnetism, signal power, and analog and digital modulation. This is followed by chapters describing how these basic concepts are applied to today's modern digital networks (e.g., WAN, MEN, LAN, etc.), wireless networks (e.g., 1G to 5G cellular, WLAN, WPAN), fiber optics, and satellite communications. The fundamental concepts discussed in this textbook give a reader the ability to better understand the potential, as well as the limitations, of modern IT systems.