This document outlines three rules for making nouns plural in English: 1. Add -s to most nouns to make them plural (book to books) 2. Add -es to nouns ending in x, s, ss, z, ch, sh to make them plural (bus to buses) 3. Change the y to i and add -es for nouns ending in y (baby to babies) The document provides examples for each rule and encourages practicing forming plurals with a whiteboard.