Maybe fixing a bug just spawned a dozen new ones. Or your code breaks in such a weird way that you wonder if you really understand it at all. You think it���s time for a deep dive.

But knowing you need to dive deeply into a topic? That���s only step 1. How do you actually learn a topic down to its fundamentals? How do you learn enough that it comes naturally to you?

There are a lot of places you could start your learning. But when I need to learn a lot about a topic quickl...