Useful addition: you can have everything important in a nutshell with the grammar books for beginners and intermediate students. 

The summary, that you have from the intermediate grammar book comes completely  new revised.  In contrast to he elementary grammar book, the new issue for the intermediate level does not include elementary phenomenons of he german grammar, that can already be found in the first book. Throughout the the level of the used german vocabulary and the excersises  can be increased. The number oft he short texts has been increased, too.  Some of them have gone beyond  the needed vocabulary in the everyday life.

Both books follow the rules of the Dependency grammar. 

There is an important enlargement, that affects the whole information in the grammar book. The arangement according to  semantic criteria has been retained. However, there are more syntactic and lexical excersises in the new issue. Temporal, causal and other relations were used – a small step towards the content and the text grammar. 

In the end there is a an unit with short texts, where everything learnt can be revised and examined. The students that successfully make these exercises, will not have problems passing the DSH or Feststellungsprüfung examinations. Furthermore, they will be good prepared linguistically for there university studies.