I have just purchased an iPod nano and cannot get my music in my iTunes library onto the nano
Hi Simeon - Is it a new device? I had something similar. Try this:
Connect your ipod nano and open itunes. On the device page, click music (next to summary, top center) and see if you have checked the box for SYNC. You need to do this for movies and all the other forms of media etc for the device to sync.
Hope that helps.