If you are an advanced chess player this Book is too easy for you,
It makes a big difference how you start your game. Many chess players lose because the they make bad opening chess moves in the beginning of the game. They just don't know how to start properly.
To get better at chess you don't need cheap chess tricks, which don't exist, but you are required to understand chess positions at a deep level and memorize the best moves of the chess openings you wish to play. This requires your time, discipline and effort on your part.