Meaning of “knock it out of the park” [closed]

What does "knocks it out of the park" mean?

Example: "All should read this book as it knocks it out of the park"


To "knock it out of the park" is a reference to a homerun in baseball - where the batter hits the ball clear out of the ball-park. It means to do extremely well. See this wikipedia page for this and other baseball related idioms.