Nationalencyklopedin is like a really big book with information about everything. This book is like a computer on the internet, but instead of searching for everything on the internet, we can find all the information we need in this one book.
The people who make this book are called editors. They write and gather information about all the things we want to know about. For example, they might write about animals, the world, countries, people, and their jobs.
When we want to find information about something, we can look it up in this big book. There are lots of words in the book, so it's important to know how to use a special tool called an index. This tool helps us find the page number for the information we need.
Nationalencyklopedin is a really helpful tool! It helps us learn new things and understand the world around us.