What it means is the compiled machine code executes on an X86 computer and the one code will not run on the other…
Try running Apple Mac OS on a PC… machine code is not compatible.
The PI on a Raspberry stands for Python Interpreter.
If you think you’re up to it…
I love it that you’re optimistic, but you are not going to catch up to 20+ years of computer in a couple hours reading… I’ve been in hard/software for 40 and I am still behind in the technical end of this…