Hi nostr:npub1vx3kzpttkqzxdk8zpw9cfqfwe909cu5gw4xn0rfa8f79f96s207s55yza9 welcome. I found the LN address a little confusing too since I was using a non-custodial lightening wallet.

This guide has some basics:

https://nostr.how/en/guides/setup-zapping-wallet