This book covers DC current, voltage, amperage, battery, resistor, DC motor, LED light, multimeter, diode, capacitor and other basic elements of a circuit. We go through the basics of electrical circuit design using Tinkercad as a tool for easy implementation and testing. We provide demonstrations to explain the roles and functions of different circuit board components. You can follow the examples we provide and test things out using the simulation function of Tinkercad. We use everyday English rather than technical jargon to give you pressure-free STEM education experience.