Pressing the F1 key will bring up a context aware “help” dialog in most any computer. If you click F1 while on your desktop, it will bring up a general help dialog about your computer. If you click F1 while running an application, it will bring up a help dialog about that application. Some applications are even aware of what you are trying to perform and will give you specific help on that particular task. This is most likely the single most efficient way of learning about your computer or application.