Textbook: Fundamentals of Catholic Dogma

This book is a 560-page compendium of important Catholic dogmas. For each dogma, it gives the degree of certainty (the highest being De Fide). It also points out related heresies.

This textbook can be dull at times, but also quite informative. I just read the section on dogmas about Angels, and found it fascinating. I try to read a little bit each day.