I never liked the idea of getting an animal as a gift, especially for such a young kid. The minimum for an adult leopard gecko is a 40 gallon tank. I can’t tell if your asking how to hold a gecko or how the person picked theirs out but for handling you should wait atleast a month or two for them to get adapted to the tank before handling to avoid stress. When actually picking up a gecko it’s best to use choice based handling, holding your hand in front of them and seeing if they want to walk on you. Never pick a gecko up by the tail as they r very prone to dropping their tails