Instructional books I would stick with Scott Cunningham as he tends to mix it up some. Deborah Lipp isn't too bad either. Currently reading English Magick by Phillip Carr, though I bought that more to try to understand the history of such things than to actually practice witchcraft. I think you'd have to define witchcraft before I could say I do or don't practice it like that. Some instructional books are just too, um, flighty/fluffy for my tastes yet that is normally what is considered witchcraft.