The article <a href="https://macos-tidbits.lai.nz/" author="Jasper Lai" source="">macOS Tidbits</a> has dozens of tips but I've only included the ones below that I had either never heard of or that I'd forgotten. There are still a lot of them. <ol> <bq><kbd>⌥</kbd> + <kbd>⌘</kbd>-click an app in the Dock to switch to that app and hide all other apps at the same time. This is great when screen sharing. Hold <kbd>⌘</kbd> to interact with background windows <i>without bringing them into focus.</i></bq> <bq>[...] double-click and drag to select word-by-word. Triple-click and drag to select paragraph-by-paragraph.</bq> <bq>When taking screenshots, hold <kbd>⌃</kbd> to copy the image instead saving it to your desktop. When using <kbd>⇧</kbd> + <kbd>⌘</kbd> + <kbd>4</kbd> to take screenshots, press space to capture by window. In this mode, you can also:<ul>hold <kbd>⌥</kbd> to take the window screenshot sans-shadow; and/or hold <kbd>⌘</kbd> to capture child views within a window (such as New/Open/Save dialogues, alert windows, et al).</ul></bq> <bq>Any self-respecting Mac app opens the Help menu when you press <kbd>⌘</kbd> + <kbd>?</kbd>.</bq> <bq>Hold <kbd>⇧</kbd> + <kbd>⌥</kbd> to adjust display brightness, volume or keyboard brightness in quarter-increments. This is useful when the lowest click is still too bright or loud. A quick way to access your Displays settings is to <kbd>⌥</kbd>-press either brightness up or brightness down. Same goes for Sound settings: <kbd>⌥</kbd>-press mute or volume up/down. Again with Keyboard settings: <kbd>⌥</kbd>-keyboard brightness up/down. (Works with Touch Bar too! <kbd>⌥</kbd>-tap the corresponding button in the Control Strip.)</bq> <bq>In Finder, hold <kbd>⌥</kbd> to <i>Get Info</i> on all selected items in one Inspector window, rather than in a barrage of individual Info windows. This also works with <kbd>⌥</kbd> + <kbd>⌘</kbd> + <kbd>I</kbd>< (instead of <kbd>⌘</kbd> + <kbd>I</kbd>).</bq> <bq>You may already know about the <i>Go to Folder…</i> menu item (<kbd>⇧</kbd> + <kbd>⌘</kbd> + <kbd>G</kbd>) in a normal Finder window. This is even quicker to invoke from an New/Open/Save dialogue: just hit <kbd>/</kbd>. (The usual shortcut still works.)</bq> <bq>With any standard column view (such as in Finder), hold <kbd>⌥</kbd> to resize all columns equally.</bq> <div><bq><kbd>⌃</kbd> + <kbd>⏎</kbd> to right-click whatever is currently focused. (Though, strictly speaking, there’s no clicking involved here.)</bq> I have been looking for this for years ... but it doesn't work. However, it inspired me to finally figure out how to do trigger the <i>secondary mouse action</i> with the keyboard. <ol>Open <i>Accessibility</i> => <i>Pointer Control</i> Check the box for <i>Enable alternative pointer actions</i> Select <i>Options...</i> Choose the keyboard combination that you want. I assigned <kbd>⇧</kbd> + <kbd>F10</kbd> to match my muscle memory from Windows. </ol></div> <bq><kbd>⌘</kbd>-click items in the Dock to reveal them in Finder.</bq> </ol>