One thing Svelte got right is their interactive tutorial is pretty amazing for learning how things work, and you can play around with it and change things and see how changing one thing effects another thing. A nostr interactive client that shows the response from the relay and how that's parsed would be cool.

Something like

Lesson 1: This is how to set up your client tools

Lesson 2: this is how you generate an nsec and npub.

Lesson 3: This is how you connect to a relay.

Lesson 4: This is how you connect to multiple relays.

Lesson 5: This is how you fetch events from a relay.

Lesson 6: This is how to filter for specific events from a relay.

Lesson 7: This is how to sign an event.

Lesson 8: This is how to send the event to the relays.

But make the whole thing as interactive as the Svelte tutorials are.