Postage stamps are small pieces of paper that you stick on letters and packages to show that you've paid for their delivery. They come in various designs, colors, and values, representing different themes, such as famous people, historical events, or nature. When you buy a stamp, you help support the postal service, which delivers your mail to its destination. Using postage stamps is simple. You just need to place the correct amount of stamps on your envelope or package, depending on its weight and destination. Once it's ready, you can drop it in a mailbox or take it to a post office for mailing.