1. The power you have with it.
With that, I mean solving your own or someone else's issues.
Be it automation, parsing weird formats, or anything else, it can usually be achieved by coding something for the task.
2. The logic (when compared to humans).
Unlike humans, code does what it's told to do. Us humans, well, we often misinterpret things. Code, however, usually has a single meaning.
3. How things can be improved over time.
Finding a way do something faster and implementing it is really satisfying.