Neat! You covered most of the things about sets. But I think, you could also highlight the matter that sets do not contain duplicates with a suitable example. We have a built-in function 'set()', allows us to convert data structures(like lists & tuples) into sets. When solving problems we often face an issue about discarding duplicates. It would have been a lot better for beginners if you mentioned this concept.
However your all blogs are going amazing.Warm regards 😊👍.