tutorial

Etymology

The adjective is from tutor (noun) + -ial, ultimately from Latin tūtor (“watcher, protector, defender”). The noun is transferred from the adjective.

adj

1. Of or pertaining to a tutor; belonging to, or exercised by, a tutor.
   The probability is that any verse of this nature, in which the lines are worn smooth, is one which has been causing tutorial ears to tingle for a generation at least; and very probably it is known in a variety of forms. 1959, Iona Opie, Peter Opie, The Lore and Language of Schoolchildren, page 363

noun

1. A self-paced learning exercise; a lesson prepared so that a student can learn at their own speed, at their convenience.
2. An interactive class taught by a tutor to students at university or college, individually or in small groups.
3. (computing) A video or text guide or instruction about a specific topic (generally a how-to)