Tips and tricks for new computer user

Here is a list of Firefox keyboard and mouse shortcuts for each of the three major operating systems organized by topic.

Show shortcuts for platform:

Browser Management		Windows		Mac OS X	Linux
Help		F1		n/a	F1
Add Bookmark		Ctrl+D		Cmd+D	Ctrl+D
Bookmarks Sidebar (toggle)		Ctrl+B Ctrl+I		Cmd+B	Ctrl+B
Browsing History (toggle)		Ctrl+H		Cmd+Shift+H	Ctrl+H
Download History		Ctrl+J		Cmd+J	Ctrl+Y
Clear Private Data		Ctrl+Shift+Del		n/a	Ctrl+Shift+Del
Page Manipulation		Windows		Mac OS X	Linux
Full Screen (toggle)		F11		n/a	F11
Increase Text Size		Ctrl++ Ctrl+Scroll down		Cmd++	Ctrl++ Ctrl+Scroll down
Decrease Text Size		Ctrl+- Ctrl+Scroll up		Cmd+-	Ctrl+- Ctrl+Scroll up
Restore Text Size		Ctrl+0		Cmd+0	Ctrl+0
Print		Ctrl+P		Cmd+P	Ctrl+P
Reload Page		F5 Ctrl+R		F5 Cmd+R	F5 Ctrl+R
Force Reload Page (override cache)		Ctrl+F5 Ctrl+Shift+R Shift+Reload button		Cmd+F5 Cmd+Shift+R Shift+Reload button	Ctrl+F5 Ctrl+Shift+R Shift+Reload button
Stop Loading		Esc		Esc Cmd+.	Esc
Save Page As		Ctrl+S Alt+Left-click		Cmd+S	Ctrl+S
Page Source		Ctrl+U		Cmd+U	Ctrl+U
Page Info		n/a		Cmd+I	Ctrl+I
DOM Inspector		Ctrl+Shift+I		Cmd+Shift+I	Ctrl+Shift+I
Page Navigation		Windows		Mac OS X	Linux
Go Down One Line		⇩ Alt+Scroll down		⇩	⇩ Alt+Scroll down
Go Up One Line		⇧ Alt+Scroll up		⇧	⇧ Alt+Scroll up
Go Down One Screen		PageDown Spacebar		PageDown Spacebar	PageDown Spacebar Shift+Backspace 3
Go Up One Screen		PageUp Shift+Spacebar		PageUp Shift+Spacebar	PageUp Shift+Spacebar Backspace 3
Go to Bottom of Page		End		End	End
Go to Top of Page		Home		Home	Home
Move to Next Frame		F6		F6	F6
Move to Previous Frame		Shift+F6		Shift+F6	Shift+F6
Move Focus to Next Actionable Item		Tab		Tab	Tab
Move Focus to Previous Actionable Item		Shift+Tab		Shift+Tab	Shift+Tab
Web Navigation		Windows		Mac OS X	Linux
Open Home Page		Alt+Home		Option+Home	Alt+Home
Back one Page		Alt+⇦ Ctrl+[ Shift+Scroll down Backspace		Cmd+⇦ Cmd+[ Delete	Alt+⇦ Ctrl+[ Shift+Scroll down
Forward one Page		Alt+⇨ Ctrl+] Shift+Scroll up Shift+Backspace		Cmd+⇨ Cmd+]	Alt+⇨ Ctrl+] Shift+Scroll up
Open Link		Enter Left-click		Return Click	Enter Left-click
Open Link (in new Background Tab)2		Ctrl+Enter Ctrl+Left-click Middle-click		Cmd+Return Cmd+Click	Ctrl+Enter Ctrl+Left-click Middle-click
Open Link (in new Foreground Tab)2		Ctrl+Shift+Left-click Shift+Middle-click		Cmd+Shift+Click	Ctrl+Shift+Left-click Shift+Middle-click
Paste URL in Tab		n/a		n/a	Middle-click in Tab4
Open Link in New Window		Shift+Enter Shift+Left-click		Shift+Return Shift+Click	Shift+Enter Shift+Left-click
Save Link Target As		Alt+Enter		Option+Return	Alt+Enter
Caret Browsing		F7		F7	F7
Tabs and Windows	Windows		Mac OS X			Linux
Open New Tab	Ctrl+T Double-Click on Tab Bar		Cmd+T Double-Click on Tab Bar			Ctrl+T Double-Click on Tab Bar
Close Tab (close Window if only one tab)	Ctrl+W Ctrl+F4 Middle-click on Tab		Cmd+W Cmd+F4			Ctrl+W Ctrl+F4 Middle-click on Tab
Undo Close Tab	Ctrl+Shift+T		Cmd+Shift+T			Ctrl+Shift+T
Next Tab	Ctrl+Tab Ctrl+PageDown		Ctrl+Tab Ctrl+PageDown			Ctrl+Tab Ctrl+PageDown
Previous Tab	Ctrl+Shift+Tab Ctrl+PageUp		Ctrl+Shift+Tab Ctrl+PageUp			Ctrl+Shift+Tab Ctrl+PageUp
Select Tab [1 to 9]	Ctrl+[1…9]		Cmd+[1…9]			Alt+[1…9]
Open New Window	Ctrl+N		Cmd+N			Ctrl+N
Close Window	Ctrl+Shift+W Alt+F4		Cmd+Shift+W Option+F4			Ctrl+Shift+W Alt+F4
Location	Windows		Mac OS X			Linux
Select Location Bar	Ctrl+L Alt+D		Cmd+L			Ctrl+L Alt+D
Complete .com Address 1	Ctrl+Enter		Cmd+Return			Ctrl+Enter
Complete .net Address 1	Shift+Enter		Shift+Return			Shift+Enter
Complete .org Address 1	Ctrl+Shift+Enter		Cmd+Shift+Return			Ctrl+Shift+Enter
Open Address in New Tab 1	Alt+Enter		Option+Return			Alt+Enter
Open File	Ctrl+O		Cmd+O			Ctrl+O
Search Engines	Windows		Mac OS X			Linux
Select Search Bar	Ctrl+K		Cmd+K			Ctrl+K Ctrl+J
Select Next Search Engine in Search Bar	Ctrl+⇩		Cmd+⇩			Ctrl+⇩
Select Previous Search Engine in Search Bar	Ctrl+⇧		Cmd+⇧			Ctrl+⇧
Open List of Search Engines in Search Bar	Alt+⇩ Alt+⇧		Option+⇩ Option+⇧			Alt+⇩ Alt+⇧
Forms	Windows		Mac OS X			Linux
Select Next Entry	⇩		⇩			⇩
Select Previous Entry	⇧		⇧			⇧
Toggle Checkbox	Spacebar		Spacebar			Spacebar
Auto Complete	Windows		Mac OS X			Linux
Select Next Auto-Complete Entry	⇩		⇩			⇩
Select Previous Auto-Complete Entry	⇧		⇧			⇧
Delete Individual Auto-Complete Entry	Shift+Del		Shift+Del			Shift+Del
Text Manipulation	Windows		Mac OS X			Linux
Select All	Ctrl+A		Cmd+A			Ctrl+A Alt+A
Cut	Ctrl+X		Cmd+X			Ctrl+X
Copy	Ctrl+C		Cmd+C			Ctrl+C
Paste	Ctrl+V		Cmd+V			Ctrl+V
Delete	Del		Del			Del
Undo	Ctrl+Z		Cmd+Z			Ctrl+Z
Redo	Ctrl+Shift+Z Ctrl+Y		Cmd+Shift+Z			Ctrl+Shift+Z Ctrl+Y
Search in Page	Windows		Mac OS X			Linux
Find in This Page	Ctrl+F		Cmd+F			Ctrl+F
Find Again	Ctrl+G F3		Cmd+G F3			Ctrl+G F3
Find Previous	Ctrl+Shift+G Shift+F3		Cmd+Shift+G Shift+F3			Ctrl+Shift+G Shift+F3
Quick Find Text	/		/			/
Quick Find Link	'		'			'

1: This shortcut only works in the Location Bar.
2: Opening a link in a new background or foreground tab can be inversed in the Options/Preferences menu, Tabs tab, ticking the option when I open a new tab, switch to it immediately.