Q: Hi, i have managed to purchase music from apple store and it is in my library, but it has not shown itself on my ipod, how do i do this ?? thanks

Hi my daughter set up for me my i pod nano on apple and has syncronised for the music i buy to download automatically, i purchased some music and this has successfully has gone on to my library, but it has not down loaded onto my i pod nano ( i had this plugged at the time, so how do i transfer the music from my library on  to my i pod nano. thank you

ps i am a complete novice to i apple.