2 things.
First don't go looking for information from Petco, the people who work there have no clue how to take care of reptiles.
Second it is generally recommended to wait a week after purchasing a new snake before you handle it. This is so the snake can settle in. I suggest that you read this, it is a very good and accurate care sheet that will clear any misinformation: http://ball-pythons.net/forums/showt...ius)-Caresheet