Youtube Karate Basics
https://www.blackbeltathome.com/traditional-shotokan-karate-home-study-course/
https://www.howcast.com/guides/796-how-to-do-karate
Readings
http://oldmankarate.com/2012/06/importance-free-sparring/
https://www.fullpotentialma.com/karate-etiquette/
http://www.karate-kids.com.au/faq/
Vovinam Việt Võ Đạo (1938)