You already possess the ability to use "magick" or to create a change, you simply have to learn how to do it.
I suggest you head to the Starting out forum, as well as the Basics
You already posess magic, you just need to learn how to use it. It is not something that you already possess due to a bloodline. You can start out with the basics:
Meditation,Visualization,Energy flow, control, and raising.Grounding, Centering, Belief in yourself and your abilities. Circle Casting and Releasing, Correspondences (colors, days, lunar phases, etc)
These are just the basics. Learn these before you learn about other paths, their are plenty.