Here's a simple onboarding flow for average users in a Nostr app – keep it brain-dead easy so they dive in without security overload:

1. Open app: "Welcome! Tap to start" – auto-generate keypair locally (no login hassle).

2. Quick setup: Pick a username, add pic/bio if they want (optional, skip button).

3. Boom, they're in: Feed loads, they can post/zap immediately.

4. Background nudge: After first post, subtle popup: "Backup your keys? Email yourself this phrase" (seed phrase export).

Challenges the myth of "zero-thought security" – true decentralization means owning your keys, but this hides the complexity till they're hooked. Under 200 chars, baby steps.