Although mentoring has been widely accepted as a support mechanism for newly appointed consultants, there are many other applications of coaching and mentoring that are less widely appreciated, such as in the development of leadership skills or in having coaching conversations with trainees to facilitate learning. This article summarises some of the basic principles and practices of coaching and mentoring, with a focus on useful knowledge for psychiatric trainers. It describes some of the qualities and skills needed in a coach or mentor; the use of questioning techniques and models; and how the coach or mentor needs an awareness of the importance of the contract in the coaching and mentoring relationship, of the role of coaching or mentoring supervision, and of the ability to evaluate coaching or mentoring. It also discusses some of the organisational context, challenges and opportunities of embedding coaching and mentoring more deeply into the work culture. It is argued that coaching and mentoring as supportive interventions have not been prioritised in the National Health Service in the same way that they have been in the private business sector, where performance and financial success are measurably increased by these techniques.