The national agricultural library is a place where people can learn about farming and how to grow plants and animals. Just like how you learn things at school, farmers can learn new things here too! The library has lots of books and papers with information on how to grow crops, raise animals, and take care of the land. They also have special tools and equipment that farmers can borrow to help with their work. Think of it like a really big bookshelf with all the information you need to be a good farmer!