So, to provide some help, Nostr is much different from main stream social media platforms in that, Nostr runs on relays. Think of relays as servers but decentralised.
So, there's no megacorporation like Twitter that has servers that host us all. Instead, there are relays (servers) owner by individuals and groups across the globe that can interact with each other...
There's more to it especially with Nostr and blockchain technology. I'm pretty new like you, doing my best to wrap my head round it all. Would like some fellas as I figure it all out. Loving the experience so far