I began to understand the Third Luminous Mystery when I got about 1/4 way into the book:
Jesus of Nazareth by Pope Benedict XVI
ISBN: 978-0-385-52341-7
For me, this book started out being very difficult to read. Then I brought it with me to Eucharistic Adoration one night. I am not kidding. As I sat before Our Lord, the book became easier and I could read more than four pages at a time. After that, I was reading it at home, in the car (as a passenger) and learning quite a bit which turned out to help my own spiritual life.
Perhaps I just got use to the Pope’s style of language. He does have a very good writing style once one gets into it. On the other hand, my heart knows that when I was at Eucharistic Adoration that night, Jesus leaned over and whispered in my ear that I should be patient–understanding would come.
Blessings,
grannymh