What every programmer should know...

What Every Computer Scientist Should Know About Floating-Point Arithmetic

What Every Programmer Should Know About Memory

What every programmer absolutely, positively needs to know about encodings and character sets to work with text

Latency Numbers Every Programmer Should Know

What every programmer should know about time

What Every Programmer Should Know About Races

What Every C Programmer Should Know About Undefined Behavior

What every data programmer needs to know about disks