A couple of years ago, I was invited by the RCIA (Rite of Christian Initiation for Adults) instructor of my parish to make a presentation for the catechumens and their sponsors on the Lord’s Prayer (also known as the Our Father). This is no simple task since it takes the Catechism of the Catholic Church about 25 pages to explain (see here, here, here and here).
St. Thomas Aquinas once wrote, "The Lord's Prayer is the most perfect of prayers... In it we ask, not only for all the things we can rightly desire, but also in the sequence that they should be desired. This prayer not only teaches us to ask for things, but also in what order we should desire them."
It was a great exercise for me to delve deeper into the Lord’s Prayer and better understand it so that I could explain it. I was able to surmise the prayer (in cliff note form) to about 40 minutes.
Here is Fr. Robert Barron's summary in slightly over 8 minutes...