how do I upload my music from my IPod to ITunes?

You don't. iTunes is designed to sync music on way, from the computer to the iOS device. Your music should be in your iTunes library on the device, unless you are referring to recent purchases that you have made with the iPod and those will be transferred when you connect the device to iTunes on the computer and then you choose Transfer Purchases.

1robertn wrote:

How do I upload my music from my Ipod to my ITunes on a PC?

See Recover your iTunes library from your iPod or iOS device.

tt2