I thoroughly enjoyed this book but it doesn't go into near as much detail as I would like- it gives a vague, general concept of how things work and some pointer

I thoroughly enjoyed this book but it doesn't go into near as much detail as I would like- it gives a vague, general concept of how things work and some pointers on how to implement them, but doesn't really go into real systems, often relegating major features to "optimizations", etc.