There are more books in the WoD line than you can use, intentionally, as it's become rather GURPS-like in its modularity. Thus, you have to pick and choose the books you want to include. Mine:
Vampire: the Requiem: For obvious reasons
World of Darkness: Ditto
The Book of Spirits
The Book of the Dead
WoD: Inferno: Demons
WoD: Slashers: Not all monsters are inhuman
Damnation City: City workbook, don't leave home without it
Belial's Brood: Just because you're a vampire doesn't mean you can't enjoy killing bad vampires, amirite?
Mythologies: A big book of mysteries
Ghouls: Because, damn, it's a great book.