Mac OS Boot shortcuts
These must be pressed immediately at startup, before the Apple Logo appears.
Option - Open Boot, displaying all bootable sources
Command R - boots into Recovery Partition
Command Option R - Boot from Internet Recovery
SHIFT - Safe Boot Mode
Command Option P R - Reset Parameter Ram
T - Target Disk Mode
D - Hardware Test
C - Boot from CD/DVD drive
N - Net Boot
Mouse key - Ejects media in CD/DVD drive
Mac OS keyboard shortcuts
⌘C = Copy
⌘V = Paste
⌘X = Cut
⌘A = Select all
⌘Z = Undo
⌘⇧Z = Redo
⌘Tab = Switch programs
⌘` = Next window in current program
⌘W = Close window
⌘N = New window/document
⌘S = Save document
⇧⌘S = Save document as…
⌘O = Open document
⌘P = Print document
⌘Q = Quit program
⌘Spacebar = Open Spotlight
⌘⇧N = Create new Folder
⌘Delete = Delete Files
⌘⇧Delete = Empty Trash
⌘, = Open Preferences
⌘←, ⌘→ = Move to start/end of line
⌘↑, ⌘↓ = Move to top/bottom of document
⌘⇧3 = Capture entire screen
⌘⇧4 = Capture custom area
⌘⇧4 Spacebar = Capture window
Trackpad Gestures
⌘CTap to click = Tap with one finger to click.
Secondary click (right-click) = Click or tap with two fingers.
Smart zoom = Double-tap with two fingers to zoom in and back out of a webpage or PDF.
Scroll = Slide two fingers up or down to scroll.1
Zoom in or out = Pinch with two fingers to zoom in or out.
Rotate = Move two fingers around each other to rotate a photo or other item.
Swipe between pages = Swipe left or right with two fingers to show the previous or next page.
Open Notification Center = Swipe left from the right edge with two fingers to show Notification Center.
Three finger drag = Use three fingers to drag items on your screen, then click or tap to drop. Turn on this feature in Accessibility preferences.
Look up and data detectors = Tap with three fingers to look up a word or take actions with dates, addresses, phone numbers, and other data.
Show desktop = Spread your thumb and three fingers apart to show your desktop.
Launchpad = Pinch your thumb and three fingers together to display Launchpad.
Mission Control = Swipe up with four fingers to open Mission Control.
App Exposé = Swipe down with four fingers to see all windows of the app you're using.
Swipe between full-screen apps = Swipe left or right with four fingers to move between desktops and full-screen apps.
iOS Shortcuts
Tap and hold for options
With hardware keyboards, many Mac OS Shortcuts work in iOS
Command-Z Undo, removes the last action and replaces it with the previous contents
Command-X Cut, removes the selected item(s) and places them in the clipboard
Command-C Copy, places selected item(s) to the clipboard, leaving the selected item(s) in their current location
Command-V Paste, places the items stored in the clipboard at the location of the cursor.
Command-A Select All, highlights the entire contents of the location of the cursor.
Command-S Save document
Command-P Print
iOS Touch Shortcuts
Double tap to select text
Double tap and drag to select by word
Triple tap to select paragraph
Drag Highlight controls to expand or restrict selected text
Press and hold on space bar on on screen keyboard to move cursor like using a touchpad
iOS Screenshot Shortcuts
Power button and Volume up to take screenshot
Tap thumbnail to edit screenshot
Crop, highlight, annotate, share, copy, and more
Delete or save to photos or files
Screenshot in documents longer than a screen provides multiple page PDF option