Here are the slides from my talk at WordCamp Chicago 2017, titled “Interrupting WordPress”. The presentation walks through the hooks that plugins can use to modify WordPress as it loads, and outlines some reasons why you might use one over another of these hooks.
Oh man, I wish I’d seen this presentation when I started working with WordPress. Thanks for posting it!
It’s also obvious that you were rocking extremely hard. Is that photo from your Spyro Gyra cover band days?