I want to get to know Billlie more!

I've been a really casual Billlie fan since GingaMingaYo, but I never fully dove into their discography (although EUNOIA was one of my most played songs last year and I'm a strong RING X RING defender). I finally listened to their whole discography today and I'm fully convinced that they can't make a bad song. I can feel the obsession building inside of me right now, like I don't think I've felt this since PIXY (semi-RIP)

Can anyone recommend me variety content or really anything to get to know them better? I wanna become a full Belllie've. I know Tsuki (how could I not) since she's literally everywhere, I love Moon Sua and Jiyoon so far, but I'm really not super familiar with everyone