Speak to Aelthalyste in the Undercity.
I would teach you all you need know, <name>, but there things that only your own tribe can show you. One be how to create a new robe for you... one that reflect your place in your faith.
Aelthalyste say that I direct you to her in the Undercity. She be in the War Quarter waiting for you. If you not go then she be very displeased with both of us.