The act, process, or art of imparting knowledge and skill
Known facts, ideas, and skill that have been imparted
An authoritative indication to be obeyed.
You don't need an instruction manual.
Following the nurses instruction, she gently stroked his cheek.
Maybe I'm your instruction manual.
The Code is an instruction manual.
"Someone didn't leave an instruction manual when she walked out on me," he replied calmly.