Computers are an essential tools for the 21st century. It is important to know the do and don't so you can be successful in completing task.

How to sit at your computer



To sit at a computer with good posture, keep your back straight, put both feet flat on the ground, and keep your arms tucked near your sides. Pull your chair up to the desk so you're close to the keyboard and be sure to keep your head elevated and chin up, even if you have to look down to see the screen. 
https://m.wikihow.com › Sit-at-a-Computer



Parts of the computer
Picture showing the different parts of the computer , monitor, keyboard, mouse



What is a computer exactly?