You could look for a coven. You can find your nearest one online. Just Google 'training coven' followed by your location.
Training covens take on a few neophytes each year. You are guided by the basics of Wicca or witchcraft, usually through degrees of initiation.
Never, ever do anything you feel uncomfortable with. No reputable coven will insist on you being skyclad (naked) during initiation ceremonies.