Don't have Telegram yet? Try it now!
https://izupen.com/2019/07/19/youtube%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%9f%e5%ad%a6%e7%bf%92%e6%96%b9%e6%b3%95/
Youtubeを使った学習方法