The most common type of bank account, and probably the first account you'll ever have (after a checking account), is a savings account. Savings accounts allow you to keep your money in a safe place while it earns a small amount of interest each month. These accounts usually require either a low minimum balance, like $25, or may require no minimum balance at all. This depends on the bank and the type of account.
Besides the fact that you will be less likely to spend it, putting your money in a savings account is safer because it is insured. If your home is robbed or burns down, your money may be lost forever. Banks and credit unions, on the other hand, keep your money in a locked and fireproof safe.