Read this to learn how it works: https://filter.nostr.wine

To add it, simply add this relay to your list (uses YOUR npub): wss://filter.nostr.wine/npub1csamkk8zu67zl9z4wkp90a462v53q775aqn5q6xzjdkxnkvcpd7srtz4x9?broadcast=true

(The broadcast flag is optional, readme explains what it does)

Keep in mind this won’t change what events you get from any other relays - I seem to see this misconception a lot.