are spells real, yes, but you need to understand what they can and can't do. magick is a natural energy found in everyone and everything, it's something you feel, so it's better if you discover magick for yourself. this energy is also neutral, once the caster uses this magick energy is it given a positive or negative charge. when we tap into this energy and focus it to, say, heal a friend, we call this a spell.
now, since magick is a force of nature, no matter how old or powerful it may be, it still follows the rules of nature. a spell to do physical change will almost never work because most of the time, people cast spells to change something that's in our human nature. as humans, we cannot grow wing, we cannot breathe under water, and we cannot change into another creature. case and point, vampire spells will never work. it must hurt to hear this, but it's the reality of the matter, magick just does not, and cannot work this way.
there are those who choose to live a lifestyle similar to a vampire, there's nothing wrong with that. be careful when consuming blood, be sure both you and the donor is tested often, and never drink too much blood or you will become sick. just remember you were born human, nothing can change this, but if you feel dressing and acting like a vampire is right for you [so long as you realize you are actually human] go for it. magickally there is no spell that can change you into one.