C/P:

If you have an iPod touch, you can easily put all of your media files, including your music files, on the device. You can set up your iPod touch so that when you connect your player to your computer, it will sync your music to your portable media player automatically or manually. Everything you will need to sync your music to your iPod touch will be included in the box in which your iPod touch came.
Difficulty: Easy
Instructions

1.
Step 1

Connect your iPod touch to your computer. Use the USB cord that came with your iPod and attach your iPod touch to your computer. Open iTunes on your computer.
2.
Step 2

Select the iPod touch. In your iTunes screen, click on your iPod Touch on the left side of the window under "Devices."
3.
Step 3

Automatically sync the music. To automatically sync your music, select the "Music" tab and put a check mark in the box beside "Sync Music." You can then select all songs and playlists or just selected playlists. To only sync certain playlists, you will need to select the desired playlists. When done, click "Apply" and the music will begin to sync to your iPod touch. When it is complete, you will get a message that reads "iPod sync is complete."
4.
Step 4

Manually sync the music. To manually sync music to your iPod touch, select the "Summary" tab and then select "Manually manage music," or "Manually manage music and videos," depending on which version of iTunes you have installed. Then click "Apply." To add the music now, just click on the music category on the left of your screen and drag them to "iPod" under "Devices," which is also on the left of the screen. Add a playlist the same way. You can use "Control" or "Command" to select and add multiple items at once.
5.
Step 5

Disconnect your iPod touch. Once you have finished syncing your music to your iPod touch, you will need to disconnect it from your computer. Select the iPod under the "Devices" screen and click on the "Eject" icon.