For office workers in need of some helpful computer tips to be more efficient, nothing is better than learning a few keyboard shortcuts.
•CTRL+C (Copy) Highlight the text or picture you want to copy. While simultaneously holding down the control button, press C.
•CTRL+X (Cut) Highlight the area you wish to cut and then press control and X at the same time.
•CTRL+V (Paste) To paste, select the area you wish to paste into, and simultaneously hold down control and then press V.
•CTRL+Z (Undo) Possibly the most useful tool ever. To undo a mistake, hold down control and then press Z.
• ALT+TAB (Switch between opened items) If you have multiple opened applications, you can view them at the same time by holding down ALT and pressing the TAB button.
A new favorite of mine, on a Mac running OS-X:
Command-Shift-4 to take a snapshot and create a file.
More screenshot tips for Mac here: http://guides.macrumors.com/Taking_Screenshots_in_Mac_OS_X
The one tough one is: what if I have a Mac running Windows but with a Mac keyboard without a PrintScn button?