Learning is acquiring new knowledge, behaviors, skills, values or preferences. It may involve processing different types of information.
The ability to learn is possessed by humans, animals and some machines. Progress over time tends to follow learning curves.
Human learning may occur as part of education or personal development. It may be goal-oriented and may be aided by motivation. The study of how learning occurs is part of neuropsychology, educational psychology, learning theory, and pedagogy.
To be an autodidact is a person who has learned a subject without the benefit of a teacher or formal education; a self-taught person.
Being a self-taught person has become easier in this current Age of Information. The World Wide Web contains information useful to anyone conducting their own program of learning about just about any topic they can choose to study.