InputEvent needs easier to comprehed writing structure and a lot more practical examples

https://docs.godotengine.org/en/3.1/tutorials/inputs/inputevent.html

So far I used Godots input maps which are straight forward and easy to use. However now I would like to store all kinds of inputs in arrays and differentiate between button hold and just pressed, and create a list and compare it to other lists for a combo system. For that input maps seem less ideal I so I was looking into input events.

I don't know how many times I've went over and through this page and could distill nothing of use.
Worst of all is the category "How does it work". Those points are written in a language I speak and understand fluidly, but I keep on asking myself: "Ok, now what does that mean in a practical sense?!"
These things need a clearer language and a lot more practical examples. Even more so the more complex a topic is.