The Church: The living body of Christ 
Hierarchy, institution, authority, Bride of Christ, Christ as the head, and how we -- as members -- participate in the Body

-- Dr. Hahn’s Books: 
Reasons To Believe (Foundational, Focus on second half), First Comes LoveRome Sweet Home 

-- Dr. Hahn's Audio: 
St. Joseph Communications carries an extensive list of Dr. Hahn's audio talks and more! 
Visit their website by clicking here

-- Dr. Hahn's DVDs: 
The Splendor of the Church

-- Dr. Hahn's Articles:
The Church's Five Wounds

-- Additional Resources:
Articles: The Church is ApostolicThe Church is CatholicThe Church is HolyThe Church is OneThe Splendor of the ChurchThat They May All Be One: The Difference The Church MakesWithout the Church There is No Salvation

Books: The Resilient Church: The Glory, the Shame, & the Hope for Tomorrow by Mike Aquilina, Pilgrim Fellowship Of Faith: The Church As Communion by Joseph Cardinal Ratzinger, The Word, Church And Sacrament: In Protestantism And Catholicism by Louis Bouyer