May I make a few suggestions? Read the following books:
- Maberry, Jonathan. Vampire Universe. New York: Kensington Publishing Corp. Copyright ©2006 by Jonathan Maberry.
- Maberry, Jonathan. The Vampire Slayer's Field Guide to the Undead. Canada: Strider Nolan Publishing, Inc. Copyright ©2003 by Jonathan Maberry. You may also want to read Rosemary Guiley's The Encyclopedia of Vampires, Werewolves, and Other Monsters as well.