- beej's networking guide is the best thing for network layer stuff https://beej.us/guide/
- explained from first principles great too https://explained-from-first-principles.com/
- pintos from Stanford https://web.stanford.edu/class/cs140/projects/pintos/pintos_...
Andreas Kling. OS hacking: Making the system boot with 256MB RAM https://www.youtube.com/watch?v=rapB5s0W5uk
MIT 6.006 Introduction to Algorithms, Spring 2020 https://www.youtube.com/playlist?list=PLUl4u3cNGP63EdVPNLG3T...
MIT 6.824: Distributed Systems https://www.youtube.com/@6.824
MIT 6.172 Performance Engineering of Software Systems, Fall 2018 https://www.youtube.com/playlist?list=PLUl4u3cNGP63VIBQVWguX...
CalTech cs124 Operating Systems https://duckduckgo.com/?t=ffab&q=caltech+cs124&ia=web
try searching here at HN for recommendations https://hn.algolia.com
Disclosure: Professor Malan is a friend of mine, but I was a fan of CS50 long before that!
Fellow hackers might also enjoy:
I like the book better than the online course.