How do you pre-order games

simply ask the cashier at your local game retailer, most likely a gamestop, if pre-orders for an upcoming game are available yet. If yes, he will ask you to put down a deposit to hold onto that pre-order. The minimum is usually 5 dollars but you can always pay more up to the point where you have already paid for the games entire retail value, meaning that when you come and pick it up you wont be required to pay the remaining amount.