<human>: Can you condense the text into a few key points?

I've been a big football fan for quite some time now, but unfortunately I did not grow up following or playing the game. I feel as though I have a pretty good grip on the basics (e.g. formations, simple route concepts...), but I really want a deeper understanding of the more intricate aspects of football (i.e. how break down plays, understand why a play did or didn't work, the pros and cons of certain formations and play calls, what the offense/defense saw that made them audible out...). I understand that this knowledge isn't acquired overnight, and it would take a long time to get to a level of familiarity where I can analyze and understand plays as they develop, but I'm hoping that someone out there has been in my shoes, and knows a good place to start. Any suggestions?
<bot>: I'm trying to gain a better understanding of the concepts, strategies and technical aspects of football, don't know any coaches or players that can ELI5, and don't know quite where to start. Any suggestions?