Do not open yourself up to something that will plague you for the rest of your life. Better off staying away from it for your sake, and the sake of your family. Christians believe this is very dangerous to be involved with. You have been warned, but it's your call!
Voodoo is not a game you can pick up the rules of in one afternoon... it is a livetime of study, hard work, and practice. If you feel drawn to it, find a reputable practitioner in your area and ask if they are taking on students. Be prepared to hear no, but even if they say yes, be prepared for a LOT of work.