Windows

Windows+Tab - Move to different Desktop
Creating Desktop Shortcut (I use ctrl+shift+A for Logger.exe)
Alt+Tab - Switch Windows
Esc - Close Dialog
Ctrl+C - Copy to Clipboard
Ctrl+X - Cut to Clipboard
Ctrl+V - Paste from Clipboard
Ctrl+Z - Undo
Ctrl+A - Select All
Window+L - Lock Computer
Winodows+Arrow - Move Window
Ctrl+Alt+Del -
Ctrl+Shift+Esc - TaskMgr
Alt+Space+x - Maximize Window
Alt+Space+n - Minimize Window
Alt+F4 - Close Window
PgDn or PgUp - move down or up in window
End - Go to end of text in a text field
Ctrl+End - Go to end of document
Ctrl+Home - go to top of a document
Alt+Prtsc - Copies Active Window to the Clipboard
Ctrl+S - Save
Web URL shorteners
Enter - Pressed the default button
Windows + G - record screen
Ctrl+F - Find
Ctrl+H - Find/Replace (notepad)
F3 - Find Next (Notepad)
Space - Press active button
tab - move to next control (button, text-box, ...)