Windows Media Player Library To Itunes?

I am very new to the Ipod Touch. How do I add my Windows Media Library songs to my Ipod Touch?

On itunes > file > add file to libary > select file ok > sync. To my little knowledge

by doing so.. Itune will duplicate the file in different format.. i think its mp4 or m4a.. you can drag an mp3 file directly to your Ipod when its connected... you can also do that to add files to your Itunes.. but directly dragging it to your ipod economize more space on your computer memory