I started with my insurance list because if they weren't on my insurance, it wasn't going to happen. Just my reality. I narrowed it down to location because I knew I needed someone local. By that point my list was pretty short. From there I went with my preference as to gender and qualifications and just set up an appointment. I prefer to actually sit down with them in session to get a real feel for if it will work or not. Other people call and talk to them on the phone. Some will email with you. For me, just having a session with them is most telling. I have no problems not returning if it doesn't feel right.