Alright kiddo, let me tell you a story! Once upon a time, a really long time ago, around the year 1200, there was a book written in a language called Old Norse. This book was called the "Gutasaga," which meant the "Saga of the People of Gotland." Gotland is an island in Sweden where people lived long, long ago.
The Gutasaga is all about the history of the people on Gotland. It talks about their way of life, their beliefs and customs, and how they used to live. It tells about their kings and important leaders too.
Think of it like a storybook about the people who used to live on this island. It was a way for them to remember their history and tell it to future generations. Now, people can read the Gutasaga and learn about how people used to live a very long time ago. Pretty cool, huh?