(For Apple computers, replace Ctrl with Cmd)

Ctrl+A Select all text
Ctrl+B Bold selected text
Ctrl+C Copy highlighted text
Ctrl+F Opens find window
Ctrl+I Italics selected text
Ctrl+K Insert hyperlink for selected text
Ctrl+N Creates a new blank document in some programs
Ctrl+O Open a file in current software
Ctrl+P Opens print preview
Ctrl+S Saves the file
Ctrl+Tab Switches between tabs in a program
Ctrl+U Underline selected text
Ctrl+V Paste text or object
Ctrl+X Cuts selected item
Ctrl+Y Redo last action
Ctrl+Z Undo last action
Ctrl+Home Moves cursor to start of document (Apple Cmd+up arrow)
Ctrl+End moves cursor to end of document (Apple CMD+down arrow)
Alt+Tab Switches between open programs (Apple Cmd+Tab)

(PC users only – not available for Apple)
Ctrl+Backspace Deletes a full word
Ctrl+left or right arrow Moves cursor one word at a time
Ctrl+Shift+left or right arrow Highlights one word at a time
Alt+F File menu options in current program
Alt+E Edit options in current program
F1 Universal help
F2 Rename selected file
F5 Refresh current program window