Viedo:
Number
https://www.youtube.com/watch?v=nNb7EldqDxE
PinyinTones
https://www.youtube.com/watch?v=ORpsNpxmfOc
How to practice tones:
https://www.youtube.com/watch?v=3wV8B4bx1lM&t=225s
Chinese characters:
Photographic characters---https://www.youtube.com/watch?v=troxvPRmZm8&t=35s
Writing rules:
Stroke Order - there's a wrong way to write Chinese characters
https://www.youtube.com/watch?v=TD7Lc4QBh5w&t=53s
Chinese character stroke order rules
https://www.youtube.com/watch?v=8MCnjfws0XQ
Basic Strokes
https://www.youtube.com/watch?v=4bH1O-FUCWU&t=299s