Practice simple endgame patterns
Learn ideas about every aspect of pawn endgames
Practice how to win with a queen against a pawn
Train to understand the critical ideas in rook endgames
Practice the most essential rook endgames
Learn when you're able to win with a rook vs a single pawn
Learn how to draw with a rook against two connected pawns
Learn how to draw and when you win with a rook and one or multiple pawns vs rook and one pawn
Learn how to find winning techniques in rook endgames with multiples pawns on each side
Miscellaneous Rook Endgame practice
Learn the main lines of the Ruy Lopez opening
Learn the closed lines of the Ruy Lopez opening
Become acquainted with the main lines of the Sicilian Najdorf