The process of learning from lectures is one that's messy (Inefficiency is where we learn best). It needs to go from a structured lecture that is coherent into your brain which just doesn't get it. Those meaningful connections (Make learning fun for eager minds) from the creator of the lecture don't transfer over into your brain, so you need to somehow fit them into your brain's paradigm.
This is the beginning of the messiness. You need to somehow make sense of what you don't know so you can focus 80% of your energy (Pareto Principle) on the things you don't know, rather than studying what other people think you should study, even if you already know it. Remember, this is for your understanding, not for someone else.
Samuel Suresh (https://youtu.be/n0ql-yeY9u0) writes down every question he has (Afformations Spark Better Change Than Affirmations), as opposed to the content from the lecture. This becomes a giant list of what he doesn't know, and is a customized roadmap of what he should actually study to understand.
He then organizes those questions into categories, grouping them by concept. Studying then revolves around answering each question within those categories. Those answers can be anywhere - YouTube videos, the textbook, Khan Academy, other lecture notes, random blogs, etc. This is divergent thinking (Convergent vs Divergent Thinking).
The process of combining and synthesizing all of those scattered concepts into a coherent structure is switching to convergent thinking (Convergent vs Divergent Thinking). Simplify it down until you can answer the each category in one single zetel. This will probably take several diagrams and scribbled notes to get there, but the information will be yours.
#learning #toolong