You need to be aware of the energy around you. Can you feel it? Can you sense it? Can you see it? If you said no to all of those questions, than you have a long way to go. It's a good practice to know something is there before you try to work with it.
Energy resides in everything and everyone. With a little practice you should be able to feel, see, and use this energy. Energy is directly related to magick, it is the fuel of spell working. First, you must understand that white and black magick is a misconception. Black is not an evil color and white is not a holy color. Black is for use in banishing, creating new beginnings, and represents the night. White is used for purification, cleansing, and use with universal energy. Magick is neither evil nor good. It is manipulation of energy to change things to improve our lives or someone else's. Energy is neutral! If the energy is used for negative purposes it is not the magick that is evil, but rather the practicioner who is directing the energy. You are apart of the energy you send out, so it would be well advised not to send out negative or harmful energies. Second, you must know and understand the Law of Three. -What you send out will come back to you times three. And if it doesn't don't forget, there is always a "bigger fish in the sea".