This is probably widely known, but I only found out this week.
I find You-tube informative videos frustrating because you have to sit through 10-20 minutes of video to get maybe 1-2 minutes worth of information. If only you could display a transcript of the spoken words!
Well it turns out you can:
Click on the three dots below the bottom right corner of the video, and select “show transcript”

… and the transcript is displayed to the right. You can then click on the three vertical dots to the top-right of the transcript and select toggle time-stamp.

You can then read the transcript on-line, or select and copy to a word-processor or text editor.
Here is the video featured above: