https://nosta.me/ is really beautiful and has a nice onboarding experience, but I feel like it is way too much to ask from someone who hasn't even gotten a taste of Nostr.

Maybe it could just generate a key for you and store it in localStorage, just ask your name and then it could be your signer, like https://nsec.app/, and tell you to go to some other apps that support NIP-46 so you could start using that key right away.

It could be the killer introductory app.