Newer portable Macs use safe sleep (hibernation) in combination with normal sleep (older computers can use this, too). What happens is that when you put your computer to sleep, the system writes the contents of RAM into the file /private var vm sleepimage
Tired of waking up to your clock radio? Well, you can use your Mac as an alarm clock, and have it play an iTunes playlist, so you wake up with the right music every day.
You can use your keyboard to quickly accomplish many tasks in iTunes. To find the shortcuts for common commands, look in the menus (or see the menu shortcuts below). To do an action, press the keys indicated below.