The document outlines the 7 steps to build a computer on a virtual desktop for an IT Essentials class: 1) install the power supply, 2) install the motherboard and RAM/CPU components, 3) install networking cards and video adapter, 4) install and secure the hard drive, 5) add optical and floppy drives and secure them, 6) connect various cables to slots on the motherboard, and 7) add peripherals like the mouse, wireless antenna, and power cord to complete the build.