Q: How do I change my apple ID on ipod nano  gen7?

I am having a bit trouble with my Ipod gen7 and changing the apple ID. I originally let my brother in law set it up for me but he has set it up so that it is linked to his apple ID on iTunes by mistake and this only has one album on it which isn't much help. What I want to change it to is the same ID that I have on my IPhone so that I can sync the two devices together. Does any one know a way to resolve this. Thanks