Zach's post about the procedure is good.

For "researching the doctor," I would include asking the following people for recommendations:
nurses/office staff at the offices of your specialist doctors;
your specialist doctors;
other patients;
family, friends, etc., especially anyone who works in any medical field in your vicinity.

Nurses and office staff can be really helpful; if a doctor is a jerk, then the office folks know it, from experience or from the grapevine. But they can be really hesitant to talk about the doctors, so try to ask them in a quiet, private space where they can't be overheard by anyone.

Good luck! Happy hunting!