Learn German in a fast, easy and effective way

I have a C1 certificate in German. Also, I am 19 and that helps me connect better with students of all ages. Even though I have zero experience in teaching German, I already have plans about how the lessons would go. I have all the useful materials such as books, but also movie recommendations. Nevertheless I have great communication skills, so I believe that I could help all the students to understand and speak this language, whether they have no knowledge of it or are already an intermediate speakers.