a self taught person
Etymology: from ML autodidactus, from Greek autodidaktos self-taught, from aut- + didaktos taught, from didaskein to teach
The adjectival form, autodidactic, is used more often.
Members of 1word1day are often autodidactic vocabularians.
The only thing that interferes with my learning is my education. – Albert Einstein
I never let schooling get in the way of my education. – Mark Twain
A fool's brain digests philosophy into folly, science into superstition, and art into pedantry. Hence University education. - George Bernard Shaw