[feyman_r]

If you want to learn more about good system design at an abstract level (not just online), cannot recommend Systemantics[1] by John Gall enough. I wish all engineers get an opportunity to read it.

[1] https://en.m.wikipedia.org/wiki/Systemantics

[dondraper36]

I enjoyed reading this book (it's a short one), even though the prose is very, well, special :)