This is a good tactics and strategy book. Not for the beginner but any club player would do themselves a favor by reviewing this book every other year or so along with some of the other 'required reading' of the chess classics.
Dr. Euwe was a psychologist and GM. If you can find an inexpensive copy of his classic book probing into the haunted-house of bobby fischer's head, that's a read that will stay with you for a long time. Euwe has plenty to say inside and outside the player's head.