Really good book for basic endings, and much easier to learn from videos than book. Pokergeek version is through ending 54 and being put up now. Pokergeek presenter seems very young, but well done. ChessIQ also has some videos, but covering only about 25 low numbered endings. Neither has that many views. More general interest in videos on gambits and queen sacrifices. I plan on watching some of the videos 2 or 3 times and practicing some of the ending against software. Can really get them down that way.
100 Endgames You Must Know Videos
Just search for "100 Endgames" in youtube, maybe most recent, although most views will get the Carlsen video. I do not want to promote a particular series. However, I like the chessgeek ones, which are about 90% complete. Really good for learning basic endgames with like 3-6 pieces remaining.
Chess Geek is amazing. Check out all his videos
100 Endgames You Must Know, ChessGeek
Endgames 1-5: https://youtu.be/5wxXvUB8k-o
Endgames 6-9: https://youtu.be/aGPpNKK_VP4
etc
Yeah, I really like the Chess Geek endgame videos and their other stuff is also good. I did not want to seem to be promoting them.
Does the 100 endgames course offer something else that is worth the money?
A new series has just started by GM Daniel Naroditsky on endgames. I *really* like it so far (just three videos thus far). His seem to be different than most others, as he's talking about general principles rather than "let's start with opposition", etc.
The first episode (just a week or so old):
https://www.youtube.com/watch?v=QUqq7wSLE78
The are based on a book, and on basic endgames like R vs P. I find them useful. You can also listen again to the parts you did not understand. There is also a video with Magnus doing like 25 of them which has huge numbers of views. Magnus does make it look easy, as the solutions are usually obvious to him. However, I prefer the videos going through each endgame.