Resistors are one of the most common and fundamental components in electronics. They are used to control the flow of current in a circuit. Understanding how to read resistor color codes is a crucial skill for any electronics hobbyist.

Capacitors are used to store electrical energy. They are often used to filter power supplies, block DC signals while allowing AC signals to pass, and in timing circuits.

Transistors are semiconductor devices that can be used to amplify or switch electronic signals. They are the fundamental building blocks of modern electronic devices.