The first person to address with questions around e.g. the organisation of studies (credit transfer, examination regulations, professionalization area) will be Anna Plader.
You may either contact her personally during her office hours, via email or by phone.
For your own search we have listed a number of often asked questions here (FAQ), where you will possibly be able to find solutions for your problems. Moreover we provide the necessary "Laufzettel" for completing your course as a download.