How to Reset an iPod Nano (1st, 2nd, 3rd Generation)

This one is similar to how you would do it for an iPod Classic:

1. Toggle the Hold switch on and off. (Slide it to Hold, then turn it off again.)

2. Now press and hold the Menu and Select buttons until the Apple logo appears, which may take about 6 to 10 seconds. You may need to repeat this step.

You can also reset an iPod Mini in the same way as the above steps