I’ve written many times that YouTube videos are an excellent source for online education: cooking, crafting, fixing, decorating, exercising — even how to play the violin.
When watching YouTube videos on my computer, I use the following keyboard shortcuts:
Press the letter K to play (or pause) a video
Press the letter J to replay the last 10 seconds of a video
Press the letter L to forward a video 10 seconds
By design, these letters are grouped together.
There are other useful YouTube keyboard shortcuts. You can find them — where else? — on a YouTube video!
Check it out at https://www.youtube.com/watch?v=UlB7TJ6cTx4