Before posting your questions, please check if it has already been answered. Also check out our sidebar and the wiki we have prepared for you. If you cannot find your answer in the resources provided above, feel free to post your questions in this thread.
Many commonly asked questions are covered in our FAQ and Wiki. And yes, your question may very well be a common one.
If you want to study in Germany, read this first: https://www.reddit.com/r/germany/wiki/studying
If your "studying in Germany" question is easily answered in the FAQs or by web search, or if you appear to have put no effort whatsoever into your question, expect people to point you to the Wiki. Detail/specific questions will be more likely to receive answers.