How do you use an ATM card , billy ?   It's easy grandpa . Insert you card into the machine here . Then wait a moment . Ok . Now you enter your PIN . It should have four numbers .   Oh yes . I've got it written down here . Just a minute .   You really shouldn ’ t write it down . You should memorize it . You can change it to a more convenient number if you like .   Ok , I've entered my PIN . There are several options on the screen . I guess I just choose which service I want , don't I ?   Yes . Choose the service you need to use . If you choose to withdraw money , the machine will ask you how much you want . 