Q: I've connected my nano iPod to my mac book air, it is not showing up in iTunes.

Hi L4URI,

Welcome to the Apple Support Communities! I understand that you are trying to sync your iPod nano with iTunes on your MacBook Air but iTunes on the computer does not see the iPod. Please use the following article to isolate and resolve this issue.

iPod not appearing in iTunes

http://support.apple.com/kb/ts3716

I hope this helps,  

-Joe