Do not count your money immediately. Put it in your pocket and walk away. Count it later. Always take withdrawal receipts with you. Some credit cards permit the withdrawal of cash only from their own respective branches or ATMs.
PIN stands for personal identification number.
The PIN number is sent you in a sealed envelope a few days after you have received your new credit card. You must send in an acknowledgement to the card company. Please memorise this number and never write it down anywhere. This number is helpful when you use the credit card over the telephone or at an ATM machine. Yes, you can change your PIN number.