Some Useful key shortcuts for windows

• Windows key + D - shows the desktop. 
• Windows key + M - minimizes all open windows. 
• Windows key + Shift + M - maximizes all open windows. 
• Windows key + E - Runs Windows Explorer. 
• Windows key + R - shows the RUN dialog. 
• Windows key + F - shows Search window. 
• Windows key + Break - shows System Properties box. 
• Windows key + TAB - Go through taskbar applications.
• Windows key + PAUSE Display the System Properties dialog box.
• Windows key + U Open Utility Manager.
• ALT + TAB - Cycle through opened applications.
• Hold down CTRL while dragging an item to Copy it.
• CTRL + ESC Display the Start menu.
• ALT + ENTER View the properties for the selected item.
• F4 key Display the Address bar list in My Computer or
• NUM LOCK + Asterisk (*) Display all of the subfolders that are under the selected folder