Nostalrius Begins - Quality wow vanilla realm (1.12)

Hey guys, just made my first character on the only server that was working for me at the time, Player Test Realm. Is this the incorrect or not the best server? Should I be on Nostalrius Begins? Are all servers still in use?

Thank you for your help, can't seem to find any info online or on forums about this yet, sorry if this is a repost

Nostalrius Begins PvP is the official server you should be playing on. The Player Test Realm can be used to an extent but is mostly used to test new upcoming content. The rest are for dev/internal purposes. There might be a new Nostalrius Begins PvE server soon, we're just awaiting an announcement.