Keyboard shortcuts can be useful to all computer users because they often allow for faster interaction than allowed by mouse clicks. Power users of all abilities frequently use keyboard shortcuts. Among people with disabilities, people who are blind or who have motor disabilities also make frequent use of keyboard shortcuts.

As it makes our work easy and save our time that's why it is very helpful. Some of common shortcuts are listed below:

• CTRL+C (Copy)
• CTRL+X (Cut)
• CTRL+V (Paste)
• CTRL+Z (Undo)
• DELETE (Delete)
• SHIFT+DELETE (Delete the selected item permanently without placing the item in the Recycle Bin)
• CTRL while dragging an item (Copy the selected item)
• CTRL+SHIFT while dragging an item (Create a shortcut to the selected item)
• F2 key (Rename the selected item)
• CTRL+RIGHT ARROW (Move the insertion point to the beginning of the next word)
• CTRL+LEFT ARROW (Move the insertion point to the beginning of the previous word)
• CTRL+DOWN ARROW (Move the insertion point to the beginning of the next paragraph)
• CTRL+UP ARROW (Move the insertion point to the beginning of the previous paragraph)
• CTRL+SHIFT with any of the arrow keys (Highlight a block of text)
• SHIFT with any of the arrow keys (Select more than one item in a window or on the desktop, or select text in a document)
• CTRL+A (Select all)
• F3 key (Search for a file or a folder)
• ALT+ENTER (View the properties for the selected item)
• ALT+F4 (Close the active item, or quit the active program)
• ALT+ENTER (Display the properties of the selected object)
• ALT+SPACEBAR (Open the shortcut menu for the active window)
• CTRL+F4 (Close the active document in programs that enable you to have multiple documents open simultaneously)
• ALT+TAB (Switch between the open items)
• ALT+ESC (Cycle through items in the order that they had been opened)
• F6 key (Cycle through the screen elements in a window or on the desktop)
• F4 key (Display the Address bar list in My Computer or Windows Explorer)
• SHIFT+F10 (Display the shortcut menu for the selected item)
• ALT+SPACEBAR (Display the System menu for the active window)
• CTRL+ESC (Display the Start menu)
• ALT+Underlined letter in a menu name (Display the corresponding menu)
• Underlined letter in a command name on an open menu (Perform the corresponding command)
• F10 key (Activate the menu bar in the active program)
• RIGHT ARROW (Open the next menu to the right, or open a submenu)
• LEFT ARROW (Open the next menu to the left, or close a submenu)
• F5 key (Update the active window)
• BACKSPACE (View the folder one level up in My Computer or Windows Explorer)
• ESC (Cancel the current task)
• SHIFT when you insert a CD-ROM into the CD-ROM drive (Prevent the CD-ROM from automatically playing)
• CTRL+SHIFT+ESC (Open Task Manager)

      N.B: Collected from Microsoft support centre