Tour of My Existence

In the process of learning, basically, we'll go through three stages. In every education system, to require useful information and knowledge, we can't outrun these three stages. And we are not supposed to skip the steps. Jump through to the final stage, will lead us right through to failures. And worst, we got nothing out of it.

Human stages of growth. [source]

So, here are the three stages of learning;
Stage 1: Exposure
When we come across some sort of new knowledge, in order to require new skills, first of all, we need exposure. We need to know what we are being exposed to. We need to know the terms, definitions and formula that might be useful afterward. Without knowing this, the basics, it would be hard for us to understand the mechanism, the advanced algorithm, the explanation, which relies on them.