The Oera Linda Book is a very old book that tells stories from a long time ago. People used to tell stories to each other before they could write them down. The Oera Linda Book is one of the oldest books ever found, and it comes from a country called the Netherlands.
The book is special because it is written in a very old language called Old Frisian. This language is so old that people today can't speak or read it, so the book had to be translated into a language that we can understand.
The Oera Linda Book tells us stories about the history of Frisia, which is a region in the Netherlands. It tells us about how people used to live a very long time ago, and how they believed in different gods and goddesses. It also talks about important events in Frisian history, like wars and battles.
However, some people believe that the book is not actually true. They think that it was written a long time after the events it describes happened, and that it was made up by someone who wanted people to believe certain things.
So, in summary, the Oera Linda Book is a very old book that tells us stories about the history of a region called Frisia. It is written in a very old language that people can't speak or read anymore, so it had to be translated. However, some people don't think that the stories in the book are true.