To apply for the GRE, first visit the official GRE website and create an account. Choose a test date and center near you, then pay the exam fee. Prepare well using study materials and practice tests. After booking, take the GRE exam and wait for your scores. For studying M.S. in Germany, check if the universities require GRE scores—many do not. Instead, focus on language tests like IELTS or TOEFL and meet the university’s admission requirements for international students.