Mac OS Help

Tips and how-to's for everyday Mac users. These guides keep things simple — showing how easy it is to get real things done on a Mac, whether it's for home or work. Check back often; new articles are added regularly.

Looking for tips on older versions of macOS? See the Archive.

Latest articles

How to Edit PDFs and Images with Preview on Mac

Use the Preview app already on your Mac to fill and sign forms, rearrange PDF pages, crop images, and add quick annotations.

How to Resize, Tile, and Switch Mac Windows

Learn simple ways to arrange, resize, and move between Mac windows using built-in controls and keyboard shortcuts.

What to Do When Your Mac Won’t Open an App

Use these safe, beginner-friendly fixes for Mac apps that are frozen, blocked, damaged, outdated, or from an unidentified developer.

Mac System Restore: Roll Back With Time Machine

Set up Time Machine and recover your files, apps, and settings after malware, accidental changes, or other Mac trouble.

How to Change the Default Browser on a Mac

Choose Chrome, Firefox, or another browser so links open there automatically instead of Safari.

How to Turn Off Ads and Suggestions on a Mac

Reduce personalized ads, promotional notifications, website alerts, and search suggestions by adjusting a few macOS settings.

How to Automatically Back Up Files on a Mac

Protect your documents and photos with Time Machine, iCloud Drive, and an external storage drive.

Mac Keyboard Shortcuts That Make You Look Like a Pro

These practical Mac shortcuts help you switch apps, arrange windows, find files, capture screenshots, and recover from little mistakes without breaking your flow.