Books can be made in a lot of different ways and with different materials. Here's a way to make a simple book with a cardboard cover that I've used with kids of all ages over the years.
Step 1: Gather Materials
The first thing we need to do is to gather up our supplies. You need: a right-angle, 18-inch ruler, pencil, x-acto knife, stapler, 5 sheets of white paper, a sheet of corrugated cardboard for your cover, and a cutting board.
The book I'll be showing you how to make here uses 5 sheets of 6 x 18 inch of white paper and a slightly larger sheet of corrugated cardboard, 6.5 x 18.5 inches. You can make your book any size by adjusting the size of the paper and cardboard, but following the same directions.
Tip: I collect sheets of corrugated cardboard from boxes I find at various businesses like grocery stores, furniture stores, and office supply stores. The best cardboard is 2-ply. I cut this cardboard up the size I need it using a mat knife or large paper cutter.