An autonomous learner is someone who takes responsibility for their own learning by setting goals, choosing learning strategies, monitoring progress, and evaluating their learning. There are four types of autonomy: technical, psychological, social, and political. For optimal learning, an autonomous learner requires input like reference models and exposure to the target language, an overall goal with specific performance targets, and feedback pointing out problems and indicating aids for pronunciation and discourse. It is important to understand autonomy as it implies a change in educational practices, with teachers and learners taking on new roles and continuously reflecting on learning needs.