The Guidebook for the Training of Trainers (TOT) Course facilitators is an integral part of the Educational Handbook on “Preventing Gender-Biased Sex Selection by Creating a More Responsible Attitude of Medical Workers and Improving their Counseling Skills”. The Guidebook is intended for the facilitators/trainers as a landmark for the course facilitation activities. The main section of the Guidebook consists of instructions and guidance to conduct twenty (20) theoretical and practical lessons presented under the scope of three (3) thematic Modules.This Guidebook for the TOT Course facilitators was approved and certifi ed by the Education- Methodological Council of the MOH RA National Institute of Health CJSC named after academician S. Avdalbekyan.