To find resistance in a series circuit, one must first grasp electrical fundamentals like resistance, current, voltage, Ohm’s Law, and Kirchhoff’s Voltage Law. Resistors, either fixed or variable, are then introduced, and their color codes are explained for decoding resistance values. The properties of a series circuit and how voltage is distributed among its resistors are elaborated upon. Finally, the practical applications of resistors, including voltage dividing, current limiting, load matching, and circuit protection, are explored.