Starthilfe
The "Starthilfe" is the semi-official German beginner's room on KGS. The Starthilfe's aim is providing help for beginners who are especially 30 kyu to 15 kyu, but sometimes there are also lessons available for more advanced beginners.
There are (at the moment at least) scheduled lessons several times a week (held in German), and reviews can be requested at any time.
The official website of the Starthilfe is http://www.kyu2dan.com/starthilfe.php , where old lessons, reviews and the latest news can be found.