The DINO Stichwortsuche service searches German topics. Use German language keywords to search.
Trails is a good starting point.
The University of Wales' German Department at Swansea has compiled a comprehensive set of links to many topics of interest to German scholars. This is a list of discussion groups which have an interest in German studies. Instructions on how to join an electronic discussion group are given at the front of this page. This location gives an outline of the economy and government of Germany plus broad geographical and historical information. A basic colour-coded map which shows the individual States.