Magic is a way of life in this world. Not talked about publicly, but federally regulated, magic is in many ways an underground phenomena that hearkens back to the days of Prohibition. Almost anyone can do some amount of magic, one just needs to know what to do and have the discipline or imagination to do it. Items of great power are sought after by those who want more, or an edge.
Some things to know: magic always comes with a cost. Always. The more you use, the greater that cost will be when it comes due. Magic changes you. Once you learn a spell, it stays with you. It becomes a part of you, and you cannot forget it. Sometimes the first taste is enough to hook someone on a slippery slope to their doom.
There are beings out there that will barter with you for knowledge or items. The price will vary, but in the end they are after your soul. Your soul is full of possibilities, and after all, that’s the fuel of magic.