you are being introduced to the the grand coven as a new novice. any of the witches are willing to train you in their (fictional, not intended to represent any real folk or contemporary religion or practice) magic. the witches are:
the herb witch: will teach you how to brew potions and heal injuries. also has the best garden
the practical witch: will teach you useful spells and rituals. also the only one who flies an actual broomstick
the nature witch: will teach you how to use magic to listen to nature, and other passive uses of magic. has absolutely tons of pets.
the evil witch: will teach hexes and curses, with the price that entails. it's said she eats babies
the wise witch: will teach you how to not use magic and the responsibility that requires. the coven has no leader, but everyone agrees it's her.
the witches don't hate each other or something, but they all live far apart, and their practices are all personal, and it would annoy them to teach someone who had been trained by the other witches. so you can dabble, but only be trained by one. who do you choose?
practical witch sounds like my jam.... i'm all about things that are useful