Using German: A Guide to Contemporary Usage by Martin Durrell (University of Manchester)
This is a guide to German usage for those who have already acquired the basics of the language and wish to extend their knowledge. It provides important information on recent trends and changes in the German language, and on style, register and regional variation, which are often ignored by conventional grammars and surveys of vocabulary. It concentrates on the particular needs of the English-speaking user, and is clear, readable and easy to consult.