The great Introduction to Machine Code for Beginners by Lisa Watts and Mike Wharton from 1983 is available online.
This book is a simple, step-by-step guide to learning to program in machine code. Machine code is the code in which the computer does all its work and programs written in machine code runs much faster and take up less memory space than programs in BASIC. A machine code program, though, is much more difficult to write and less easy to understand than a program in BASIC.
I remember reading this as a kid, so I presume that it was translated into Swedish. Still, a colourful introduction to how the machine thinks. I’ll show it to my daughter this weekend.