About the endgame technique book, I don't have it, but I've read that it is not a break down of typical endgame themes (such as rook and pawn endgames) for instruction, that covers theory etc. It is only a book that helps you analyse though endgames from actual GM games.
I have his endgame manual, and it's more what you'd think of a traditional endgame book being. You find the rook and pawn endgame chapter, find the section dealing with positions where pawns are on both sides of the board, and start reading.
The diagrams in blue ink he considers must know positions for a tournament player, the diagrams and analysis in black ink are further analysis of the same theme, many marked with a $ symbol which he uses to say it's important to endgame theory. This is the book to buy if you want to learn endgames.
If you're satisfied with how much endgame knoweldge you have already, but want to add some analysis of GM games, then based on what I've heard you should go for the secrets of endgame technique.
hello,
Both books are of author Dvoretsky, if fellow members have both books, can they explain whats the difference between those 2 books and which of them they prefer?