Top Four Instructive Rook Endgames Everyone Should Know

YouTube Channel: ChessDojo.
Excellent commentary from IM Kostya Kavutskiy.

Watch this video on YouTube:
https://www.youtube.com/watch?v=2aWZbJcx5cQ&t=131s

Kostya has included the .pgn files here:
https://www.chess.com/library/collections/rook-endgames-101-2GJv6uMWe