NOSTR stands for Notes and Other Stuff Transmitted by Relays. The protocol can be as small as 1 client & 1 relay

Notes (text) and Other Stuff (image,video) can be published by users using client. The most popular on mobile are Amethyst & Plebstr (Android) & Damus (iOS)

Relays is where the user's published data being stored. Anyone can run their own version of relay but it's not a obligation to do so.

Relays works similarly like a gossip between a bunch of crowd in a mask party. If i saw Batman attending my party i would store that data in my memory & maybe "gossip" that data by whispering it to my friends.

The friend has no obligation to accept or believe my data, they just operate based on their own interest. And if relay keep forwarding data from one to another, eventually relay that i trusted will show data that other people's published previously.

No one really knows each other in a mask party, unless you selectively reveal yourself to someone else. PublicKey on NOSTR is a long string of numbers & letters but again, you can simply identify/claim a specific pubkey. "Hey i'm gonna come to the party using a red & black mask = Hey this is my pubkey on NOSTR pls follow 🥺👉🏽👈🏽"

In order to access the party i'm gonna need a ticket pass, this ticket pass cost me 0$. But if i lose the ticket i can simply buy another one but i need to reintroduce myself to others at that party. "I should keep this ticket pass securely"

Pubkey, privkey, client & relays are the most important basics of NOSTR. Remind me of something else if i forget any detail