If you live for any period of time in the UK, you'll probably want to open a bank account. There are two main types of accounts: a current account and a savings account.
You can use a current account for your day-to-day banking needs. Your bank might give you a cheque book, which allows you to write cheques to pay for goods and services. You'll probably also have a bank card which allows you to withdraw cash from cash machines (also known as atm or "hole in the wall" machines) and to pay for goods in shops. You get a secret pin number (personal identification number) that you use when you withdraw cash.