I'd feed on whatever was necessary to keep my strength up, trying to keep a low profile and covering up my kills as accidents and arson, vampirizing a few choice beasts, preferably of the Mustelidae, i.e., Weasel, family, such as the Wolverine, to serve as my enforcers and bodyguards whilst I track down my sire (or any other vampires or denizens of the night) and learn more about my condition and the world I thought I knew...and, infecting as many pregnant women with my blood as I can to create an army of dhampirs and Daywalkers to ferret out those who would be a threat to my power.