Car - my vehicle started up fine this morning but I parked it and shut it off and all the lights?

It depends on your car. If you have a new battery and haven't left your lights on accidentally, then there's a possibility that there is a problem with electrical system. There could also be a loose connection if you just replaced the battery. Without knowing what car you drive and without knowing knowing if it's made any specific sounds. There's not a whole lot that anyone call advise you about.