just go on as you recently did.search the forum and you will get the answer! You spend 18 min readtime with your recent questions and searches.This really isn‘t too hard or too much.
Maybe better use the TaifunPlayer extension .Best choice in my opinion.
You will also get in touch on your journey with problems of file handling and permissions on later android versions.But you will find answers for those problems too. Just search,read and learn.
Good luck and happy coding!