I got to know the nuances of the language by working with it for years and having to figure out why various things didn't work at different points, but it doesn

I got to know the nuances of the language by working with it for years and having to figure out why various things didn't work at different points, but it doesn't sound like that's your style. This isn't comprehensive, but it's probably the most helpful deep-dive I've ever seen about some aspect of JavaScript. It's about the Event Loop, which is one of the biggest differences between JS and comparable languages like Python: https://www.youtube.com/watch?v=8aGhZQkoFbQ https://www.youtube.com/watch?v=8aGhZQkoFbQ Contrary to what you might think, even though the event loop is in some sense "distinct from the language", it isn't simply an API. You can't really have JavaScript without the event loop; it exists in both the browser and in Node, and is the basis for most of the language's advantages.