Well you can from best-selling instructor, Mark Perren-Jones in this introductory aromatherapy essential oil introductory course.
Mark is a Fully Certified Aromatherapist in Aromatherapy and an essential oil specialist, approved by The National Association for Holistic Aromatherapy (NAHA), and the Alliance of International Aromatherapists (AIA) – both leading governing bodies for educational standards for Aromatherapists.