This document provides instructions on how to build a basic computer. It outlines the key components needed which include a case, power supply, motherboard, processor, heat sink and fan, RAM, hard drive, optical disc drive, graphics card, modem, and sound card. The motherboard serves as the central component that hosts all the other hardware. Together, these parts allow the computer to power on, process commands, store and access data, display graphics, connect to the internet, and produce sound.