You have experience as a football coach. You've even attended courses, clinics, workshops and have a theoretical education sustaining your knowledge and allowing you to experiment and try new activities. You want to continue to deepen the knowledge and learn more about the new trends moving current football and how to coach in a more advanced, professional level.
Here I leave the links to other articles where you can find more advanced technical and tactical information about coaching. I recommend you also take a look at the following articles: "Beginner coaches" and advanced coaches”.