If you are restoring you iPod and it asks you to turn off FindMyiPhone then:
- Place the iOS device in Recovery Mode
https://support.apple.com/en-us/HT201263
and then connect to your computer and restore via iTunes. The iPod will be erased.
If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled
https://support.apple.com/en-us/HT204306
- If recovery mode does not work try DFU mode.
How to put iPod touch / iPhone into DFU mode « Karthik's scribblings
https://geekindisguise.wordpress.com/2009/07/16/how-to-put-ipod-touch-iphone-int o-dfu-mode/
- For how to restore:
Use iTunes to restore your iPhone, iPad, or iPod to factory settings
https://support.apple.com/en-us/HT201252
Note that in order to use the iPod you will still have to enter the ID and PW last used in Settings>iCloud on the iPod