Here are some basic information related to study in Germany
German Language certificate (B2/C2)
Passing Studienkollege test
Recommendation Letter
Motivation Letter
Studienkollege (ST)
April-May
*can be changed
£60-800 language preparation
£10000 Studienkolleg + language
£12000/year (Private)
£200-300/semester (State)
£400-500/month
dependent on which city you live and your lifestyle
Technische Universität Darmstadt
For more detailed information go to this link