Signals. I spent 2 years to understand this part.
33:52
Faster than Rust and C++: the PERFECT hash table
21:30
How a Single Bit Inside Your Processor Shields Your Operating System's Integrity
19:12
Kernelless Kernel Programming (eBPF) - Computerphile
13:56
everything is open source if you can reverse engineer (try it RIGHT NOW!)
16:46
How Linux Kernel Runs Executables
28:49
How a Microcontroller starts
12:25
Become a shell wizard in ~12 mins
41:34