This document is the first lesson of a Madinah Arabic reader. It introduces basic Arabic grammar concepts like demonstrative pronouns this/that and common nouns with the indefinite article a/an. It provides examples of sentences using demonstrative pronouns to identify objects. It also differentiates between indefinite nouns used with "a" and definite nouns used with "the". The lesson concludes by introducing rules for forming indefinite and definite common nouns in Arabic.