Can i start my own apple id?

When i was younger i got an ipod touch. I wa naive and let my sister handle it. She made it so we shared her apple id. I want my own but i don't want to restart it and lose everything.
*is there any way i can start my own apple id on my ipod and keep everything? Like just change the apple id cuz i want my own apple id cuz i'm getting an iphone soon and i want my own apple id but i don't want to start completely from scratch.

Just sign up for a new apple id in itunes.

Unfortunately no.