mjsw on Nostr: You get it from either setting up your own custodial wallet, which takes some effort ...

You get it from either setting up your own custodial wallet, which takes some effort and know-how, or you can use a custodial wallet with all the fun features built into it so you can start right away.

Here's a bit more info: https://nostr.how/en/guides/setup-zapping-wallet

Others have mentioned Wallet of Satoshi if you're not in the US. You can also try an #ecash wallet that supports whatever device you post on: https://docs.cashu.space/wallets . Ecash tokens are redeemable for bitcoin.