This document provides instructions for determining the resistance value of a color-coded resistor. It explains that a resistor is a circuit element that implements electrical resistance to control current flow. It then lists the color bands on a resistor and their corresponding digit values. The first two color bands represent the resistance value, the third band multiplies that value by a number of zeros, and the fourth band indicates the tolerance level. An example is worked out, showing a resistor with green, black, yellow, and silver bands, representing a resistance value of 500,000 ohms with a ±10% tolerance.