Studying in Germany for Masters can be a good idea, especially because of the education quality and cheap courses. So the steps that you'll have to follow are:

1. Select a University of your choice and apply to it. For majority of the colleges you can apply to them directly through their websites. Check the language requirements as if the course is in German, you'll have to qualify German examination and if it's in English, you'll have to give TOEFL or IELTS.
2. Arrange funding as you'll have to show them that you have enough funding in order to support your studies.
3. Once done with these and secured admit, apply for visa and start a new student life in Germany!

Hope I have answered your question. All the best!