One of the most common requests I get is for a good teacher or group. As a policy I generally don't give out referrals like this any more. I can't stay in contact with everyone, and it has happened that a group or individual started out being very good but ended up focused on acquiring money and/or power rather than teaching. So I suggest that people visit local book stores or occult shops and ask there. Alternatively, organizations such as The Witches' Voice or journals such as the Circle Guide to Pagan Resources or central organizations for specific occult orders may help. Even so, how do you know if someone or some group is a good one? Of course, they need to be able to provide you