Taike- that is wonderful that your son has taken such a interest in the guitar. Unfortunately too many children are so glued to their phones, that they have little interest in any thing other than social media and binge watching Netflix...

Speaking to you from experience of having a very musical daughter ( she is now a violin performance major in college) , try to be supportive but be careful about putting too much pressure on him to perform/make videos. He'll do so when he's ready. Hopefully he can find a community of like minded kids to play music with, which in my opinion will be the best way to motivate and improve his skills.

Kind Regards,

Paul