Usually you can get the instructor's phone number and talk to them before signing up. Ask a massage therapist for a referral. A few do energy work also. Most will not be listed. Ask for referral from one of the Contact people in your state but be aware that they may not know which members work with energy.
Healing requires trust.
After you meet any practitioner, I recommend you first ask yourself if you inherently trust this person - ask your feelings and intuition. If you have a strong gender preference in practitioners, honor it. Different styles of healing work suit different people. Try another style or direction. If you feel nothing is happening and you are a person of strong expectations, keep in mind that healing follows its own direction and healing that is not related to your expectations often needs to occur first.