An Amusement Machine using LEDs

I have not yet found any tutorials on nesting loops.

Top hit for a google search for
Nested loops in C

I thought that having one for loop leading to braces containing another for loop was nesting one set of code inside another

It is.

perhaps a little break is in order?

Up to you, keep replying and I keep answering so the pace is up to you. It might not seem it to you but we are almost there.