Shortcut card

Hold the first key down, tap the next, then let go of both.

To do this	Windows	Mac
Select everything	Ctrl + A	Command + A
Copy	Ctrl + C	Command + C
Cut (to move)	Ctrl + X	Command + X
Paste	Ctrl + V	Command + V
Paste without formatting	Ctrl + Shift + V	Command + Option + Shift + V
Undo	Ctrl + Z	Command + Z
Redo	Ctrl + Y	Command + Shift + Z
Save	Ctrl + S	Command + S
Print	Ctrl + P	Command + P
Find a word	Ctrl + F	Command + F
Switch windows	Alt + Tab	Command + Tab
New tab / close tab	Ctrl + T / Ctrl + W	Command + T / Command + W
Reopen a closed tab	Ctrl + Shift + T	Command + Shift + T
Screenshot of part of the screen	Windows + Shift + S	Shift + Command + 4
Lock the screen	Windows + L	Control + Command + Q

Selecting files: Ctrl + click (Command + click on a Mac) picks particular files. Shift + click picks a run of files in a row.

Phone shortcuts

1. Select a word: double tap it. Select everything: tap Select All in the menu.
2. Move the cursor: iPhone, press and hold the space bar and slide. Android, slide along the space bar.
3. Full stop: tap the space bar twice at the end of a sentence.
4. Undo typing on iPhone: swipe left with three fingers, or shake and tap Undo.
5. Camera fast: iPhone, swipe left on the lock screen. Many Android phones, press the power button twice.