Obligatory shout out to Morris and Kaashoek's class at MIT - they update the reading list every year, and it's always great: https://pdos.csail.mit.edu/6.824/

I am going through this right now. I finished Lab 3. I also made my own notes about some of the papers they discuss, specifically Spanner.

https://sudk1896.github.io/2026/09/03/Spanner-notes.html

Highly recommend this course.