Cut: PC: Ctrl + X | Mac: Command + X
Copy: PC: Ctrl + C | Mac: Command + C
Paste: PC: Ctrl + V | Mac: Command + V
Paste Without Formatting: PC: Ctrl + Shift + V | Mac: Command + Shift + V (great for copying text from web pages)
Undo: PC: Ctrl + Z | Mac: Command + V
Redo: PC: Ctrl + Shift + Z | Mac: Command + Shift + Z
Insert or edit link: PC: Ctrl + K | Mac: Command + K
Open link: PC: Alt + Enter | Mac: Option + Enter
Save: PC: Ctrl + S | Mac: Command + S (Every change is automatically saved in Drive so this is unnecessary)
Print: PC: Ctrl + P | Mac: Command + P
Open: PC: Ctrl + O | Mac: Command + O
Find: PC: Ctrl + F | Mac: Command + F
Find and replace: PC: Ctrl + H | Mac: Command + Shift + H
Find again: PC: Ctrl + G | Mac: Command + G
Find previous: PC: Ctrl + Shift + G | Mac: Command + Shift + G
Hide the menus (compact mode): PC: Ctrl + Shift + F | Mac: Ctrl + Shift + F
Insert page break: PC: Ctrl + Enter | Mac: Command + Enter
Search the menus: PC: Alt + /, Alt + Shift + Z, Alt + Z | Mac: Option + /, Ctrl + Option + Z, (Firefox: Ctrl + ~)
Bold: PC: Ctrl + B | Mac: Command + B
Italicize: PC: Ctrl + I | Mac: Command + I
Underline: PC: Ctrl + U | Mac: Command + U
Strikethrough: PC: Alt + Shift + 5 | Mac: Option + Shift + 5
Superscript: PC: Ctrl + . [period] | Mac: Command + . [period]
Subscript: PC: Ctrl + , [comma] | Mac: Command + , [comma]
Copy text formatting: PC: Ctrl + Alt + C | Mac: Command + Option + C
Paste text formatting: PC: Ctrl + Alt + V | Mac: Command + Option + V
Clear text formatting: PC: Ctrl + \, Ctrl + Space | Mac: Command + \
Increase font size: PC: Ctrl + Shift + > | Mac: Command + Shift + >
Decrease font size: PC: Ctrl + Shift + < | Mac: Command + Shift + >
Open revision history: PC: Ctrl + Alt + Shift + G | Mac: Command + Option + Ctrl + G
Open research tool: PC: Ctrl + Alt + Shift + I | Mac: Command + Option + Shift + I
Define selected word in research tool: PC: Ctrl + Shift + Y | Mac: Command + Shift + Y
Word count: PC: Ctrl + Shift + C | Mac: Command + Shift + C
Start voice typing (available in Chrome browsers): PC: Ctrl + Shift + S | Mac: Command + Shift + S
Move to next misspelling: PC: Ctrl + ' | Mac: Command + ' [apostrophe]
Move to previous misspelling: PC: Ctrl + ; | Mac: Command + ;
Insert comment: PC: Ctrl + Alt + M | Mac: Command + Option + M
Open discussion thread: PC: Ctrl + Alt + Shift + A | Mac: Command + Option + Shift + A
Enter current comment: PC: holding Ctrl + Alt, press E then C | Mac: holding Ctrl + Command, press E then C
Move to next comment: PC: holding Ctrl + Alt, press N then C | Mac: holding Ctrl + Command, press N then C
Move to previous comment: PC: holding Ctrl + Alt, press P then C | Mac: holding Ctrl + Command, press P then C
Move to next edit (while viewing revision history or new changes): PC: holding Ctrl + Alt, press N then R, Ctrl + Alt + K | Mac: holding Command + Option, press N then R, Command + Option + K
Move to previous edit (while viewing revision history or new changes): PC: holding Ctrl + Alt, press P then R, Ctrl + Alt + J | Mac: holding Command + Option, press P then R, Command + Option + J
Insert footnote: PC: Ctrl + Alt + F | Mac: Command + Option + F
Enter current footnote: PC: holding Ctrl + Alt, press E then F | Mac: holding Ctrl + Command, press E then F
Move to next footnote: PC: holding Ctrl + Alt, press N then F | Mac: holding Ctrl + Command, press N then F
Move to previous footnote: PC: holding Ctrl + Alt, press P then F | Mac: holding Ctrl + Command, press P then F
Increase paragraph indentation: PC: Ctrl + ] | Mac: Command + ]
Decrease paragraph indentation: PC: Ctrl + [ | Mac: Command + [
Apply normal text style: PC: Ctrl + Alt + 0 | Mac: Command + Option + 0
Apply heading style [1-6]: PC: Ctrl + Alt + [1-6] | Mac: Command + Option + [1-6]
Left align text: PC: Ctrl + Shift + L | Mac: Command + Shift + L
Center align text: PC: Ctrl + Shift + E | Mac: Command + Shift + E
Right align text: PC: Ctrl + Shift + R | Mac: Command + Shift + R
Justify text: PC: Ctrl + Shift + J | Mac: Command + Shift + J
Create Numbered list: PC: Ctrl + Shift + 7 | Mac: Command + Shift + 7
Create Bulleted list: PC: Ctrl + Shift + 8 | Mac: Command + Shift + 8
Move paragraph up/down: PC: Alt + Shift + Up/down arrow | Mac: Option + Shift + Up/down arrow