As a noun, a tutorial is a lesson or set of instructions that teaches you how to do something, often step by step. As an adjective, it describes things related to a tutor or one‑to‑one teaching.
From Latin "tutorius" meaning of a guardian, through Medieval Latin and Old French forms, then English "tutorial" meaning belonging to a tutor. It moved from legal guardianship language into education.
Every YouTube "how‑to" video is basically a modern tutorial, doing online what private tutors once did at a desk. The word carries the idea of slow, guided, personal learning—even when thousands of people are watching the same clip.
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