I started reading for friends in a flat in Bangalore with a borrowed deck and no idea what I was doing. Seventeen years later I read full time, mostly for people sent by someone I have already read for.
I do not predict. A reading is a structured hour of attention on a question you have been circling alone, and the cards are the structure. Most people arrive knowing the answer and needing to hear it said out loud by someone with no stake in it.
I will not read on someone else's behalf, I will not tell you whether to leave a marriage, and I will not pretend a spread can replace a doctor, a lawyer or a therapist. Everything else is fair game.