This is so easy, I wonder how it made all the way up to the front page.
I write these kind of mini-scripts all the time
I write these kind of mini-scripts all the time
I teach for a living (music technology), and it's incredible how badly a lot of things are explained (in all fields). Clear explanation and worked examples, combined with appropriate progression in difficulty is what makes for good learning, and I think this is a good example.
I spend a lot of time here, mostly in awe of the expertise of others and hoping to learn something from them.