I will attempt to answer both your questions, though not in the order you gave them. Please be assured that what I say is intended in the kindest way possible.
Unfortunately or fortunately, you will never find a working vampire spell on this or any other website. If you wish to you can try every single spell on the site, but other than a psychological response, nothing about you shall change. If you wish to learn about energy leeching/vampirism, I would be willing to teach you under certain circumstances, however if you do not meet these standards, I will refer you to various threads or sites on it. Or you could do a simple search of it yourself.
On starting out, you'll want to view the thread in the General Info category that is titled "Starting Out". The author has done a beautiful job of explaining the basic tenants of several faiths, and has given adequate information for any beginner. If you would rather simply skip to spell work, I will say this: for nearly every path out there, our actions have consequences whether our intentions are good or bad. Your actions and words have an effect upon the world around and within you, and this is an important thing to remember in magic. If you cast, make sure you know what you are doing and how to undo it, otherwise you may very well regret it.