How do you download songs from cd's you owwn to your ipod?

In the General section of the iTunes Preferences you can select your Import Settings - such as AAC or MP3. Insert your CD into the computer and open iTunes if it is not running. The CD will be listed in the left hand pane of iTunes. Select the CD title and all the tracks will be listed. Right click on the tracks you want to import and select Create AAC (or MP3) Version. This will create a copy of the track and add it to your library. When you next connect your iPod to iTunes you can add the tracks from your library as required.