Book excerpt: This book was created for the aspiring medical interpreter who wants a complete and comprehensive course based on accreditation standards for medical interpreting education. It is also for those who are seeking to complete a course that will serve as pre-requisite for CMI and CHI certification. Developed by Liberty Language Services, an interpretation agency that also trains professional medical interpreters, this course was developed for the modern-day interpreter working in the 21st century. The medical interpreting profession has come a long way over the past 20 years, and we have created a course that includes the necessary skills and knowledge to perform as a trained and qualified medical interpreter. A comprehensive textbook that presents the required knowledge and skills required to become a professional medical interpreter. Readers will learn about the roles of the interpreter, code of ethics, and how to perform as an interpreter from professionalism to managing the flow of an interpreted session. Aspiring interpreters can find all they need to know to begin their journey as a professional, trained and qualified medical interpreter. The field of medical and healthcare interpreter training has been evolving. We have included an innovative chapter written by Cynthia E. Roat, MPH, A recognized subject matter expert on medical interpreting, she contributed the chapter and exercises on the topic of message conversion: the mechanics and how-to of converting a spoken message from one language to another. The role of the medical interpreter as cultural broker has also been debated and has evolved to include the undeniable fact that medical interpreters serve as mediators of intercultural communication. We have also included a special emphasis on intercultural mediation, which is the contribution from leading expert in medical interpreting, Dr. Izabel de Souza.