You open your playlist and see 84 videos. The exam is in six days. Pressing play on everything would eat most of that time, and you would still not remember much afterward. While putting this guide together, I opened a physics lecture playlist and ran into a small problem: the transcript I copied on my

Your exam is tomorrow, and you’re watching a two-hour lecture, but you still have no idea which parts are most important or what is most likely to appear on the exam. You want to focus on those important parts, but a YouTube lecture isn’t like the pages of a book that you can quickly flip