You just need to import your song into iTunes library, then make a playlist with the songs, plug in your iPod to computer, iTunes will detect the iPod automatically, then click iTunes menu "File -> Sync iPod", the songs will be transferred from iTunes to iPod. If you want to know how to convert video and put DVD movie on iPod, I think this step by step guide would help you http://www.dvdintoipod.com/how-to-convert-dvd-video-to-ipod.html Hope it helps. Contact me if you have any other question.
Answers & Comments
You just need to import your song into iTunes library, then make a playlist with the songs, plug in your iPod to computer, iTunes will detect the iPod automatically, then click iTunes menu "File -> Sync iPod", the songs will be transferred from iTunes to iPod.
If you want to know how to convert video and put DVD movie on iPod, I think this step by step guide would help you
http://www.dvdintoipod.com/how-to-convert-dvd-video-to-ipod.html
Hope it helps. Contact me if you have any other question.