Buy the NoW books
The textbook contains the main parts of the web-course; texts, word lists, grammar and pronunciation.
The workbook is a collection of grammar, vocabulary and oral exercises that can be used either for classroom teaching or individually. This workbook is an addition to the online course and contains exercises that are different from those found on the website. However, the grammar and most of the vocabulary presented in the exercises in this workbook are the same as in the online course.