So, Tibetan Buddhist Canon is a very special collection of books that teach people about Buddhism in Tibet. It's kind of like a giant library full of books that has everything you need to know about Tibetan Buddhism.
But these books are not like regular books that you keep on your bookshelf at home - they are written on special paper and are decorated with beautiful designs and pictures. Plus, they are also written in a special language called Tibetan, which is different than the language that most of us speak.
Inside these books, you can find all sorts of things about Buddhism, like how to meditate, how to be kind to others, and even stories about Buddha.
People who follow Tibetan Buddhism use these books to learn more about their religion and to better understand themselves and the world around them.
In summary, Tibetan Buddhist Canon is like a really big, special library full of beautiful books that teaches people about Tibetan Buddhism.