In the previous post I told you about the service with audio-books, where you can try the first book for free and then choose any for a god price.
Now i would like to tell you about another good thing you can find in the web site of Deutsch Akademie – little exercises to check your knowledge. You can choose the exercises according to your level, or according to the book you are having lessons on. Moreover you can choose the number of questions and the number of unit as well. After you can compete with other users – students who answer the most of the questions appear in the rating! I find it cool and very motivating to learn more and more :)