The basics of Copy, Cut, and Paste
Copy: After selecting one or more items using your mouse or keyboard, press Ctrl+C. The information will be copied to the clipboard.
Cut: After selecting one or more items, press Ctrl+X, and the information will be copied to the clipboard and removed from the original location.
Paste: Select a destination by clicking on an area (or by placing your cursor in the position where you want the information to go), then press Ctrl+V.
The basics of Selecting multiple items
Single item: Click on an item and it is selected.
Range of items: Click on the first item, press the Shift key+Click on the last item. All items between the two will be selected.
Multiple items that are not continuous: Click on the first item, press Ctrl+Click on any other items. All items clicked on will be selected, you can also re-click on an item to unselect it.