This publication aims to be a user-friendly resource for supervisors to develop their practice grounded in current theory and evidence. The publication extends beyond past notions of student supervision to include supervision of professionals in their work place and the emergent importance of professional mentoring for ongoing professional development. The publication is written from the perspective of a broad range of health science practitioners, including audiology, dietetics, nursing, occupational therapy, pharmacy, physiotherapy, podiatry, prosthetics and orthotics, radiography, and speech-language pathology. Acknowledging that health science professionals work in busy and often stressful environments, there is a deliberate intention to present complex theoretical material in a simple and person-centred format. Such a presentation aims to assist the reader to more easily integrate the material into their practice. The user-friendly style as previously utilized in Best and Rose (1996) continues to receive extremely positive feedback from readers and course developers.