I find that after you've picked up the basics, reference materials are usually the most useful part of documentation by far. For programming languages I always

I find that after you've picked up the basics, reference materials are usually the most useful part of documentation by far. For programming languages I always add the standard library reference into my browser's search engines. For example, I can type "kt mutablelist" into my address bar to go straight to https://kotlinlang.org/docs/reference/?q=mutablelist&p=0 https://kotlinlang.org/docs/reference/?q=mutablelist&p=0.