This little list might be helpful for some windows users. It is a detailed listing of windows keyboard shortcuts that most people don´t use because they simply don´t know about them. I´am not using many as well except maybe Ctrl+C to copy, Ctrl+V to paste the copied content and Alt+F4 to close a window. Shortcuts are a great way to work faster. The list is not complete but contains about 40 shortcuts.
Related posts:
Ten Windows Keyboard Shortcuts I cannot live withoutControl Windows Media Center with Keyboard Shortcuts
Handy GNOME Keyboard Shortcuts
Add New Keyboard Shortcuts
Add PC Wide Keyboard Shortcuts
Ask the Readers: Single Key Shortcuts
Quicklaunch for Tools with keyboard shortcuts
Set Global Shortcuts in Windows

