Computer's Short Cut keys

Here's a bunch of Windows hotkeys you can use everyday, i know i do. You may or may not know them, so here goes:

ALT + F4 = Close Window
CTRL + N = New Widnow
CTRL + W = Close Window (Google Chrome, Windows Explorer, etc...)
Ctrl + J = (firefor download page)
CTRL + S = Save
CTRL + Alt + S = Save As (Microsoft Office)
CTRL + A = Select All
CTRL + C = Copy
CTRL + V = Paste
CTRL + D = Minimize
CTRL + L = lock window
Windows Key + Tab = Aero Windows Switcher (Win7)
Alt + Tab = Window Switcher
CTRL + Z = Undo
CTRL + Alt + Z = Undo (Adobe Software)
CTRL + Alt + Delete = Lock Menu (Win7), Task Manager (WinXP)
PrintScr = Screen Shot (Windows Key + PrintScr to save automatically in Win8)