I think nobody here has the knowlege to become a vampire, in my many years of parapsychological investigations i found differents kinds of vampires, from the psyquic, and astral vampires, till the human vampires.
in the human "vampires" I found a mentally ill people, that Thinks and belive that they are vampires and sucks blood, and some people with malnutrition.
these people have a some kind of chronic and strong anemia that makes some people desperate to the smell of blood (iron) at the point that can attack others people to bite them and eat the blood.
But I found some we can think is a real human vampire, but they are Witch-vampires that can transform in animals to go to the people sleeping and sucks the blood.
If you found a real human vampire, you must to ask him how to you can become one of them.I men a rel vampire not a psichotic guy. Ok?