Cossack on Nostr: Whats a good resource to learn about Nostr? Im struggling to get into it, despite ...

Whats a good resource to learn about Nostr?
Im struggling to get into it, despite seeing massive potential. What I guess I lack is a way to discover topics other than Bitcoin and have some algorithms. One to see popular posts of people I follow, one to see popular posts to topics that interest me and one for popular posts globally.