Where should I start as new Miku Fan?

Hey yall
Ive always been interested in Hatsune Miku but never thought to give her a try and then after seeing the tiktoks of her singing Intergalactic Bound and saying Sydney (my home town) I cant stop rewatching them and listening to Intergalactic Bound so I was wondering where the hell is the best place to start listening to Miku?
What songs should be recommended first, should I read lore or a wiki? I noticed in concert videos there were some "people" on stage who weren't Miku so Im guessing its a pretty expansive world thats been made

Any help would be appreciated