It is a self-study reference and practice book for elementary-level learners (A1-B1). With clear examples and easy-to-follow exercises, it is perfect for independent study, covering all the areas of grammar you will need at this level. Includes an eBook, which has the same grammar explanations and exercises found in the printed book, plus other great features such as integrated audio for all of the example sentences and an easy-to-use answer key.