3 ms·

I second the nomination. I too have found the TeX Book to be very readable.

• gjm11 4y ago
  Pedantic note, which I'm writing just in case anyone misunderstands your recommendation: "The TeXbook" is the user manual for TeX. It is not the same thing as the book containing the (literate-program) source code for TeX, which is called "TeX: the program". (Both are excellent, but in quite different ways, and someone looking for interesting code to read would likely be disappointed by the TeXbook, which doesn't contain that.)
  • db48x 4y ago
    You’re right! I had to go pull my copy off the shelf and check, but it really is TeX: The Program.
    • drfuchs 4y ago
      Make sure to check out the dedication!