Thought I would post some of my favorite sites.
While this is not specifically Catholic, I think it helps understand the banking industry.
Maria Lectrix You can find audio version of some of the greatest Catholic books here, The Dialogue of St. Catherine of Sienna, The Story of a Soul, etc.
Liturgical Year This site is dedicated to The Liturgical Year by Gueranger with the full set in PDF format and some HTML.
Catholic Mass An audio book about the Catholic Mass.
The Lives and Times of the Popes This is a good set on the history on the Popes.