Press
To
CTRL+C
Copy.
CTRL+X
Cut.
CTRL+V
Paste.
CTRL+Z
Undo.
DELETE
Delete.
SHIFT+DELETE
Delete selected item permanently without placing the item in the Recycle Bin.
CTRL while dragging an item
Copy selected item.
CTRL+SHIFT while dragging an item
Create shortcut to selected item.
for more go to:
http://www.petri.co.il/keyboard_shortcuts.htm