what do you mean getting a new tama? if you want to start over you get a thin object and use it to press the reset button on the back.
hope you find what you are looking for!
oh and by the way if you are talking about having a tamababy then you have to have two adult tamagotchis and keep connecting until finaly their is a sequence of kissing and fireworks between the tamagotchis and a baby will b born!