I'm a Catholic of the Catholic Catechism variety, don'cha know! (As are all catechists worth their salt) and a great appreciator of John Paul II and Benedict XVI. I think their love of God is in the "great" category, and their devotion to the truths of the Faith very exemplary, and good clear communicators as well.
It's very easy to find what they taught online, as well as the Catechism, which is searchable by keyword. In this way Christ teaches through the Church, drawing from the teachings that come to us through His Apostles.
Visualize it as an unbroken chain going back to Pentecost, regarded as the Birthday of the Church.
And you? Jehovah's Witness?