There's no "correct" route. The logical way into tackling a subject to you might be different to someone else. The "see it in action and delve into more detail

There's no "correct" route. The logical way into tackling a subject to you might be different to someone else. The "see it in action and delve into more details later" approach might not be the way you see the best practitioners developing their skillset, and starting at the theoretical basics and building from there might be the more academically rigorous approach, but it can be effective approach to directing learning. If I was learning Java, I'd want to get cracking on developing a "Hello World" application before trying to understand the JVM.