Okay kiddo, let me tell you about der kanon. A canon is like a big list of important stuff. It's like a bucket filled with your favorite toys! But instead of toys, it has important books, art, and music.
Sometimes people make these lists so that others can learn about the really important things in a certain field or topic. So, a canon of literature might have books that are really important for people to read and understand. Or, a canon of music might have songs that a lot of people agree are really good and should be studied.
So, when someone talks about der kanon, they're probably talking about important things in a certain area of study. It's like a list of the best and most important toys - but for grown-ups who want to learn things!