Questions about example sentences with, and the definition and usage of "Steno"

A: A steno notebook is a notebook with a rigid back, a binding on the top, and two columns of ruled lines. It is short for "stenography," the art of writing things down very quickly, especially in a courtroom setting.

Longhand means written normally, not in any kind of special shorthand to make it faster to write down. Shorthand was once a common skill used by journalists and court reporters.

Stacks are vertical piles or columns.

Composition books are notebooks with a binding on the side like a regular book.

In that case a "mounted head" is the taxidermied head of an animal mounted on the wall.