Vampire Knight Manga...Ahh help.?

After I finished the Vampire Knight anime, I started reading the manga where the show left off. At first it was making sense, but now I'm a little confused, and honestly, this manga is dragging on. There's so many secrets Kaname is keeping from Yuuki... Then there's that girl Sara-sama who's making an army of vampires for herself? For what though, and what is Kaname hiding about it... & Why is Hanabusa still in jail?! AND WHERE'S ZEROO D; I have more questions, but I'll just leave it at that for now:) Helpp anyone? Thank yaaa :D