As someone who also doesn't know Jupyter, what sort of fun and useful things would I do with this? It looks like I can add content and some code blocks that I c

As someone who also doesn't know Jupyter, what sort of fun and useful things would I do with this? It looks like I can add content and some code blocks that I can execute. I guess taking notes and tinkering? I'm messing with Elixir just for fun, so this caught my eye.