To reach tennis enlightenment you must first understand the Way of Tennis. Start with fully reading and fully understanding Chapter 1:
The Tennis that can be spoken is not the eternal Tennis
The name that can be named is not the eternal name
The nameless is the origin of the Ball and the Racquet
The named is the mother of myriad strokes
Thus, constantly without desire, one observes its essence
Constantly with desire, one observes its manifestations
These two emerge together but differ in name
The unity is said to be the mystery
Mystery of mysteries, the door to all wonders.
Few have achieved perfect enlightenment alone.
Seek the guidance of her Holiness Kimiko Date-Krumm.
That is all.