Oxford Univerity Press - (free online interactive exercises; you can practise grammar, vocabulary, pronunciation, listening or play games) Start learning - Continue learning
Vokabeltraining (Bild und Aussprache)
BBC Learning English (Grammar, Vocabulary, Phrasal Verbs, Articels,...) listen and read!
Training of irregular verbsEFL learning-site improve your Englisch (audio,video, text,...)
LEO - Deutsch-Englisches Worterbuch online
useful linksEnglische Grammatik online (Beispiele), Free Audio Books, Grammar, Listening for Kids
BBC News (audio, video), ESL Videos http://www.manythings.org/b/e/4597
Eigenverantwortliches Lernen im Englisch Unterricht
History (listen and read): http://www.manythings.org/voa/history/34.html
Social networking - Tea Time Magazin (text and audio): http://www.teatime-mag.com/magazines/7-de/business-and-economy/
Listen and repeat (irregular verbs and rhythm): http://www.manythings.org/repeat/