Peter Chan of Herons Bonsai - Great beginner and intermediate information
https://www.youtube.com/@HeronsBonsaiUK
Bonsai Q - Intermediate to advanced concepts, Japanese with English subtitles, specialize in mini Bonsai
https://www.youtube.com/@bonsai_q
Jonas Dupuich Bonsai Tonight - beginner to advanced concepts
https://bonsaitonight.com/recent/
Dan Robinson Elandan Gardens - Advanced and Gnarly realistic Bonsai work
https://www.elandangardens.com/