Depending on the language and level, each 30-lesson course will teach between 300 and 500 new vocabulary items. However, the goal of the Pimsleur programs is not to teach as many disjointed vocabulary words as possible, but to allow you to use and manipulate the language, to understand the structure, and to be able to construct your own sentences. Once you’ve got the structures down and have mastered a basic vocabulary, adding new words and structures becomes natural and easy.