There doesn't seem to be anything in the book outlining how the patron communicates with the witch. I originally assumed that it was through the familiar, but the familiar isn't capable of verbal communication until level 5. For now my GM has ruled that the patron communicates through the familiar, who passes on the info to me in a non verbal form(not telepathy), such as pointing to something, leading me somewhere or guiding me through emotion with the empathic link. Is there any official explanation on the nature of the communication?