If you have iTunes, you can rip CDs onto your library and sync them onto your iPod. You can also buy and download songs from iTunes and put them on your iPod. If you have an iPod touch, you can also get songs from the iTunes app, which is always a default app on the iTouch.
You have to sync it because when you sync it go from your computer to your iPod but if you have an iPod touch you can download songs from your iPod's iTunes store.
by pluggin the device to your computer and using the sync option
if you plug your iPod into your computer it will sync your music to your iPod. Or you can buy your songs with the iTunes app on your iPod touch.
Plug your ipod touch into itunes and click sync.
you can burn the songs you want to sync onto a CD and then download them to your iPod from the harddrive
You can't but you can onto the Touch or Iphone
By itunes and sync them into your device.
When you sync a iPod touch it backs up your iPod and it can download all the songs on your computer (if you choose that option when you go to you iPod setting in music on your computer) :)
If you already have the songs on your computer you just simply need to sync your ipod touch with your computer.
In iTunes just unckeck the song and then sync your ipod. The song won't sync to your ipod touch unless you tell it to sync your entire library. It's that simple. Hope this helped :)
Connect your iPod to your computer using a USB and iTunes will automatically sync your songs.