Teaching medical writing is a varied, interesting, and satisfying role. You might find yourself teaching PhD students to write theses, laboratory scientists to write posters, clinicians to write papers, or professional medical writers to improve their skills. Each of these groups starts with different levels of knowledge and requires different teaching approaches. There is no single prescription for the ideal training course. In fact, to provide maximum benefit to trainee writers, each course will have to be fully tailored to their needs and designed to keep them interested and involved. This article provides ideas to help develop and run effective (and fun) writing training courses. The five main aspects covered are research, planning, developing content, assembling course materials, and managing the training day.