booklet
A small, thin book that gives short, useful information.
A booklet is a small, thin book with just a few pages, usually held together with staples or a simple fold. You've probably seen booklets when you visit a museum (they hand out guides about the exhibits), get instructions for a new board game, or receive a program at a school concert listing all the performers.
Booklets are designed to give you important information without overwhelming you with a thick, heavy book. A national park might provide a booklet showing hiking trails and wildlife. A doctor's office might have a booklet explaining how to stay healthy. Companies create booklets to teach people how to use their products.
The key thing about a booklet is its size and purpose: it's meant to be portable, quick to read, and focused on a specific topic. While a full book on astronomy might have hundreds of pages covering the entire universe, a booklet might just explain the constellations you can see this month. Booklets respect your time by getting straight to the point, making them perfect for instructions, guides, or short collections of information you need right away.