dear sir, should i learn german before submitting my appilication for seeking admission or will that be alright if, i learn before visa appilication?

Hi, Since the medium of instruction in the international degree programmes is mainly english,you are not expected to have German language skills.Instead a proof of proficiency in english ,like IELTSor TOEFL,is often required.Neverthless the basic knowledge of german language will help u to interact