Just get a Lightning wallet like nostr:npub1hcwcj72tlyk7thtyc8nq763vwrq5p2avnyeyrrlwxrzuvdl7j3usj4h9rq or nostr:npub1earna05hx6ax38r33h3atmecjzdu547m8suw87w70aw6mlyga4hsqcja5j and save your Lightning address in your nostr profile