tutorial

Short definition from Wiktionary

Adjective

1. 1
   Of or pertaining to a tutor; belonging to, or exercised by, a tutor.

Noun

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