Generally I don't like to give recommendations on books. Despite popular sayings about ho there is no such thing as dangerous knowledge, there really is. However from reading recent posts, in the forum, and especially on Chat, I would like to make one book recommendation at this time. I might make more later.
Dion Fortune wrote a book that is far more informative than most any of the nonsense you will see today's books shelves, and it was written in the early 20th century. It is a book highly recommend anyone who wishes to study magic and explore the occult have on their bookshelf. It is called Psychic self defense, by Dion Fortune. It should be one of the mainstay book in any course of learning when exploring occult matters, and I highly recommend it.