How to change default browser on MacHow to change default browser on Mac in System Settings or from the browser itself, how to switch back to Safari, and where the default email app is set.
How to boot Mac into Recovery ModeHow to boot a Mac into Recovery Mode on Apple silicon and Intel, Internet Recovery key combinations, and what you can do in macOS Recovery.
How to clear Go cache on Mac: go clean -cache and -modcacheHow to clear the Go build cache and module cache on a Mac with go clean -cache, -modcache and -testcache, and why rm -rf fails on ~/go/pkg/mod.
How to boot Mac in safe modeHow to boot a Mac in safe mode on Apple silicon and Intel, how to tell it worked, what safe mode does and how to leave it.
How to clear Xcode cache on MacHow to clear Xcode cache on a Mac: delete DerivedData, clean the build folder, remove old simulators, runtimes and device support files.
How to install a DMG file on Mac: MacWashing as an exampleHow to install a DMG file on Mac step by step, using MacWashing: open the disk image, drag the app to Applications, first launch and Full Disk Access.
How to force quit on Mac (Ctrl-Alt-Delete)How to force quit on Mac when an app freezes: Option-Command-Esc (the Mac’s Ctrl-Alt-Delete), the Apple menu, the Dock, Activity Monitor.
How to uninstall Python on Mac completelyHow to uninstall Python on a Mac: from python.org, Homebrew or pyenv, what to keep (Apple’s own python3) and how to check it’s gone.
How to stop apps from opening on startup on MacHow to stop apps from opening on startup on a Mac: remove login items, turn off background items and stop windows from reopening.
Mac Wi-Fi not working: how to fix itMac Wi-Fi not working or connected without internet? Restart Wi-Fi and the router, rejoin the network, run Wireless Diagnostics, check VPN.
Mac not turning on: what to doMac not turning on? Check the power and the display, force a restart, reset the SMC on Intel, revive the firmware, and know when to contact Apple.
How to cut and paste on Mac: text and filesHow to cut and paste on Mac: Command-X and Command-V for text, Option-Command-V to move files, Paste and Match Style, and pasting on an iPhone.
How to change wallpaper on MacHow to change wallpaper on Mac: built-in pictures in System Settings, your own photo or folder, dynamic and aerial wallpapers, several displays.
How to find Wi-Fi password on MacHow to find a Wi-Fi password on Mac in the Passwords app or Wi-Fi settings, share it with a QR code, and where to look on macOS Sonoma.
How to check battery health on MacBookHow to check battery health on a MacBook: Maximum Capacity and condition in Battery settings, the cycle count in System Information, and Apple’s limits.
How to free up space on MacHow to free up space on Mac and clear storage: see what fills the disk, turn on Apple’s recommendations, then delete downloads, backups and caches.
How to delete Time Machine backups on MacHow to delete Time Machine backups and local snapshots on Mac, and why macOS usually frees that space by itself.
How to empty Trash on MacHow to empty Trash on Mac, delete one item right away, empty it automatically after 30 days and what to do when the Trash won’t empty.
How to uninstall apps on Mac completelyThree ways to delete an app on a Mac, where its leftovers stay, how to remove them by hand and what to do when an app won’t delete.
Mac stuck on Apple logo: how to fix itMac stuck on the Apple logo? Wait out an update, restart, try safe mode, repair the disk with First Aid in Recovery or reinstall macOS without erasing.
How to clear Teams cache on MacClear the Microsoft Teams cache on a Mac the way Microsoft documents it: quit Teams, delete two folders, restart. When it helps and what stays.
How to unzip files on Mac and zip themHow to unzip files on Mac with a double-click, how to zip a file on Mac with Compress, password-protected zips, and what to do with RAR and 7z.
How to reset SMC and NVRAM on MacHow to reset SMC on Mac with Apple silicon, Intel with T2 and older Intel, and how to reset NVRAM (PRAM) on an Intel Mac, with Apple’s exact keys.
yarn cache clean: how to clear Yarn cache on MacHow to clear Yarn cache on a Mac: yarn cache clean in Yarn 1 (Classic), --all and --mirror in Yarn 2 and later, and where each version keeps it.

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