Answer with Explanation:
The author connects reading Shakespeare to the personal self-interest of his audience by relating it to how a person learns his subjects in school or how he learns a piece of music. He further emphasized that if a person tries to read Shakespeare again and again, he'd be able to grasp the meaning of his writings. This is similar (as he stated) to that of listening to a piece of music for the first time. People, sometimes, don't get the meaning of the song at first but later on, appreciates it. If a person wants to know Shakespeare more, reading his writings over again is worth the effort.
If a person doesn't try, then he'll never learn, thus reading Shakespeare is a personal interest and is dependent on open-mindedness to possibilities.