These are just some classic links from Triablogue on Catholicism that if you have free time, are worth your attention:

Newman, “The Roman Catholic Hermeneutic”, and Rome’s Foundational Assumption

On the possibility that Pseudonymous and Pseudipigraphical works made it into the New Testament Canon

The Crafting of the 4th Century Roman Church, Doctrine, and Papacy

Truly madly deeply

Justification Apart From Baptism After The Time Of The Apostles

Sin