Hoodoo doesn't work with spirits, it is the basically the absense of working with them. People claim that rootworkers work with the saints and so on, but its really just working by yourself. I would avoid people associated with Luckymojo the website, since most of them are scams.
I would recommend you to read more on the practice and more on what forms the bases of it. For example, Hoodoo doesn't pertain to any certain theology. It puts great emphasis of personal power, lacking the use of deities or spirits to get workings done. A recommendation is not to read anything of Denise Alvarado on the subject as she mixes religion, path and practice all together and will simply confuse you. I wish you luck.