The aim of this phenomenological qualitative study was to explore the opinions of the teachers on mentoring process and their experiences. To achieve this aim, the study sought information on mentoring essences, practices, roles, and training needs of mentor teachers. Experienced and beginning teachers were purposefully selected from eight English-medium secondary schools in South Africa. Data from the literature review, 16 group interviews and 24 open-ended questionnaires were triangulated and thematically analysed to gain a deeper understanding of the phenomenon. Forty-eight experienced teachers and 24 beginning teachers shared their life experiences, perspectives, and perceptions on the mentoring process. The study revealed that in South African schools, mentoring was patchy and unsystematic. Data collected revealed that a new working environment presented some social, personal, and professional challenges to beginning teachers. It was revealed that experienced teachers were willing to support their fellow beginning colleagues even though they were not trained in the mentoring process and did not receive the necessary support from the school management teams.