Electricity videos. Audio can be annoying, but the visualizations (although corny at times) are outstanding for developing intuition.
https://www.youtube.com/watch?v=XiHVe8U5PhU&list=PLkyBCj4JhH...
GreatScott! - building projects
https://www.youtube.com/channel/UC6mIxFTvXkWQVEHPsEdflzQ
bigclivedotcom - does A LOT of teardowns, and you learn A LOT by seeing what designers have done wrong.
https://www.youtube.com/channel/UCtM5z2gkrGRuWd0JQMx76qA
EEVblog - Dave talks (sometimes a bit long-winded, but I like him anyway) about various electronics topics. His explanations are outstanding.
https://www.youtube.com/channel/UC2DjFE7Xf11URZqWBigcVOQ
Afrotechmods - Both good for explanations as well as building stuff