NOTE: I don't know If this is posted in the correct place, if it isn't, my bad! ( Most of the other topics where things like: Work and Education, which I blatantly assumed that If I posted there, my question would NEVER get answered ).
I am currently 16 years old and am aspiring to become a Hardware engineer, I have looked online and tried to find books & other literature on Computer Architecture/Design, but All I found was Wikipedia and some other websites ( most of them just being very basic guides to Computer Hardware, Which I already have knowledge of/on ).
I have built 5 desktops and 2 "standalone" servers, so I already have "fundamental-level" knowledge of it.
QUESTION: Is there any "formal" literature or Guides to Computer Architecture/Design? If so, Where would I find it or where would I buy it?