ELI5: Explain Like I'm 5

world wide web

The world wide web (or "WWW" for short) is like a giant library filled with websites that you can visit. Websites are pages of information where you can find lots of fun things like games and cool pictures. To get to these websites, you need a special program called a web browser. This is like a book that you can use to "browse" different websites. The web browser helps you to find what you're looking for in this giant library.