MegaFastfinger shows us how to put your iPod Nano 4G on standby. You just press down on the play/pause button for a few seconds and the iPod will turn off, meaning it's on standby. To turn it back on you press down on the play/pause button for a few seconds and it will turn back on. To turn it off completely you need to press down on the center button, then the menu button and it will turn off. When you turn it on the apple logo should appear and you will know you've turned it off completely.