How does a money order work?

I need to mail a money order to someone , I never had to so. do I need to go to the bank get the money take it to the currency exchange as well as pay for the money order the give me the money order and I just mail it huh?

Since a money order is so secure, though, criminals may try to take advantage of consumers' trust and produce fraudulent versions. U.S. Postal Service money orders.