Training for adults or young adults is a subject at the heart of the concerns of 90% of individuals. Who hasn't thought of taking a course to improve their skills, change direction or develop professionally? In adult training, we talk about andragogy, a combination of Greek words meaning "the art and science of helping adults to learn", which is the learning relationship between the trainer and the trainee. Every human being who reaches adulthood has acquired knowledge and skills, so they need to be valued and feel recognised. Thanks to two vectors: motivation and commitment on the part of the learner, training will enable specific expectations to be met based on experience (experience, patterns, habitus). Adults must be prepared to undergo a relatively significant change in their identity and career. Training is constantly evolving and must adapt to individual needs. Access to lifelong learning is a right for everyone and should be asserted wherever possible.