I also recommend the handmade video series.
Casey Muratori has been live streaming himself build the same game for the past few years. He try's to build everything from scratch, which is entertaining and quite the brain dump.
Also, the video archive and live chat is searchable. I can't count the number of times I
- searched for some keyword or phrase, like "CPU"
- was greeted by a link that read something like this
"Day 025: Finishing the Win32 Prototyping Layer (01:38:59) Isn't the CPU Memory bandwidth only valid for on-die memory?"
- clicked the link to receive 3-10 minutes of extremely dense but well-explained information on a topic.
- spent the next hour or so googling technical terms and subjects that filled massive holes in my knowledge.
If you love learning, treat yourself to jumping around the video archive :)
https://guide.handmadehero.org/
Two favorites of mine from the archive Undefined Behavior: https://guide.handmadehero.org/chat/chat011/
Modern x64 Architectures and the Cache: (https://guide.handmadehero.org/chat/chat017/)
P.S. Its worth mentioning that you can buy the game hes building and get access to the source code. I'm not associated with handmadehero.org or Casey Muratori in anyway. The community just led to me becoming a better programmer over the past 5 years. I hope someone reading this finds the value I did in rabbit-holing for hours and laughing at the rants of a seasoned game dev.
*edit: formatting