Computer Basic

A clear, friendly guide to computers for complete beginners, updated for 2026.

Learn what a computer is, what is inside it, how to use Windows 11 and macOS, how to manage files and apps, and how to stay safe, with simple step-by-step instructions and original illustrations.

What's inside

• Getting started: what a computer does (input, processing, output and storage), hardware and software, types of computers, and turning on, signing in and shutting down

• Inside the computer: the processor (CPU), memory (RAM), SSDs and hard drives, graphics, motherboard and power, and what GHz, GB and TB mean

• Ports and connections: USB-C and Thunderbolt, HDMI, audio, Ethernet, Wi-Fi and Bluetooth

• Screens and input: displays, the keyboard, mouse and trackpad, touch screens and pens, and accessories

• Operating systems: Windows 11 basics, Windows 10 support status and your options, macOS, ChromeOS, Linux, Android and iOS

• Files and folders: folder trees, file paths, file extensions, and copying, moving, deleting and zipping files

• Apps: installing apps safely from app stores and websites, updating and uninstalling

• Cloud, backups and internet: cloud storage, backups with the 3-2-1 rule, and a short introduction to the internet and email

• Everyday skills: keyboard shortcuts for Windows and Mac, screenshots, printing and scanning, accessibility features

• Troubleshooting: frozen apps, restart or shut down, a slow computer, and no sound, picture or Wi-Fi

• Staying safe: updates and built-in protection, passwords, two-step verification and passkeys, and how to spot scams

• Buying and care: which specifications matter, cleaning, battery care and preparing an old computer for recycling

• A searchable glossary and answers to common questions

Easy to follow

• Original illustrations: inside a computer, ports, the keyboard, the Windows and Mac desktops, a folder tree, the 3-2-1 backup rule and a fake virus warning

• Numbered steps and menu paths for Windows and Mac

• Short quizzes to check your understanding

• Search every page at once

• Clean, modern design with dark mode

• Works offline, with no account needed

• Available in 8 languages: English, Español, Português, Français, Deutsch, العربية, हिन्दी and Bahasa Indonesia

Written for complete beginners, older adults, students and anyone who wants to feel more confident with a computer.

Based on the official support pages of Microsoft, Apple and Google, and on advice from national cyber security agencies.

This is an independent guide. It is not affiliated with or endorsed by Microsoft, Apple, Google or any computer maker. Windows, macOS, ChromeOS and other names are trademarks of their respective owners. Menus and features can vary by version, device and region.