You're supposed to read the VN first, you filthy secondary.
Then it doesn't really matter, the anime adaptations (Spring Song soon), Zero, Apocrypha, EXTRA, Extella, Grand Order, strange fake, El Melloi Case Files, Prisma Illya, Carnival Phantasm, Type Red Line, they're all fairly self-contained other than having some sort of base in what's establish in the VN.
Read Fate/Hollow Ataraxia before that cooking one, Dinner at Emiya's House or whatever, though.
Then it doesn't really matter, the anime adaptations (Spring Song soon), Zero, Apocrypha, EXTRA, Extella, Grand Order, strange fake, El Melloi Case Files, Prisma Illya, Carnival Phantasm, Type Red Line, they're all fairly self-contained other than having some sort of base in what's establish in the VN.
Read Fate/Hollow Ataraxia before that cooking one, Dinner at Emiya's House or whatever, though.