Unknown file types
- How to open an unknown file type. Choosing an app, setting a default, and a safety note on suspicious extensions.
Why a dedicated computer hub?
Windows and Mac menus move between versions, and a lot of computer-help content online is either outdated or written for the wrong operating system without saying so. Every guide here names the exact platform for every step, cites the software maker's own documentation, and flags a detail explicitly when it varies by version rather than picking one and presenting it as universal.
Files and apps
Installing apps
- How to install and download apps on a laptop. Microsoft Store, Mac App Store, and official installers.
Zipping files
- How to zip and unzip a file or folder. Windows, Mac, Android and iPhone.
Setting up and resetting
Formatting
- How to format a laptop. Windows Reset this PC, and macOS Erase Assistant.
Windows 11
- How to install Windows 11. Checking eligibility, and upgrade versus clean install.
Display
- How to zoom in and out on a laptop. Windows and Mac shortcuts and accessibility tools.
Media and apps
Play Store
- How to update the Google Play Store. What the Play Store's own version check actually does.
Audio extraction
- How to extract audio from a video. Using VLC's free Convert/Save tool.
PPSSPP emulator
- How to install games on PPSSPP (Android). Setting up the official emulator and loading your own game files.
PDFs and Office documents
PDFs
- How to open and edit a PDF file (free). What free tools can and can't do.
Word
PowerPoint
Excel
People also ask
Do these guides cover both Windows and Mac?
Yes, where the task applies to both. Each guide names the exact platform for every step rather than assuming one operating system.
Are these guides sourced from Microsoft, Apple and Google directly?
Yes. Every guide cites the software maker's own official support documentation, with anything that couldn't be officially confirmed flagged explicitly rather than stated as fact.
Will more computer guides be added?
Yes, as more topics clear this site's sourcing-confidence bar.