YT channels

Game Design:
https://www.youtube.com/@GMTK/videos
https://www.youtube.com/@Gdconf
https://www.youtube.com/@extracredits
https://www.youtube.com/@extrahistory/playlists

Unity programming:
https://www.youtube.com/@Tarodev
https://www.youtube.com/@git-amend

General game programming/software architecture:
https://www.youtube.com/@CodeAesthetic
https://www.youtube.com/@simondev758
https://www.youtube.com/@BrendanGalea
https://www.youtube.com/@thebennybox

Sites

https://develop.games/
https://www.gamedeveloper.com

Unity shaders:
https://danielilett.com/
https://danielilett.com/2021-05-20-every-shader-graph-node/