Which app? Fun fact, you can download hundreds of apps (clients) and use your same nostr account in all sorts of ways! It's what makes nostr a million times better than any other basic app. A lightning address is a way for people to send you sats (Bitcoin) for things you post!

So anyways, what client (app) are you using?

Hey man welcome. It can be confusing at first, stick with it. It's not like traditional social media, so give it a little room to breathe.