Aidan Wachter is quite popular around here, and in his third, latest and seemingly most appreciated book (Changeling, A Book Of Qualities), he lists fifty-five different qualities that witches supposedly possess, with a small chapter on each of them; they are all qualities that it would well behoove maturing mages to assimilate and embrace.
All three of his books are available in ebook form in the Book Shares section of Wizard Forums (the other two are titled Six Ways: Approaches & Entries For Practical Magic and Weaving Fate: Hypersigils, Changing The Past & Telling True Lies).
If you want to avoid whitelight fluffybunny rainbow unicorn Wicca and study the more serious side of the Craft (and yes, it does indeed exist), stick with the more classic authors in the field, One of them is Doreen Valiente; another is Janet Farrar. There are others, and these two can point you to them in their bibliographies. Wicca is a young, eclectic and syncretic faith, but there are power and wisdom to be found there. However, I would advise seekers along that path to seek wisdom, not power; those who seek power without also seeking the concomitant wisdom may indeed attain some power, but may lack the understanding to properly use it and find that its employment fails them in their aims, goals and desires, or even results in adverse consequences. Those who seek wisdom, however, will also attain power, in its proper time and measure, as they become wise enough in its ways to properly engage with it.
