I find that most people struggle to answer the question regarding "A good book to learn system programming". Zig would be great, as a programming language for a book regarding introducing people to systems programming in modern days and eventually more advanced topics. An open book could also be a good start to make it happen considering open contributions.
I am more interested in system programming but i feel its difficult to enter this field and even where to start learning from. I am currently a junior android developer.
It's clearer what is happening behind the scenes, like heap allocations, for example. It's this difference in clarity that made Linus not accept C++ in the Linux kernel.