Catechism of the Catholic Church: http://www.usccb.org/beliefs-and-teachings/what-we-believe/catechism/catechism-of-the-catholic-church/epub/index.cfm

Compendium of the Catechism of the Catholic Church: http://www.vatican.va/archive/compendium_ccc/documents/archive_2005_compendium-ccc_en.html

Baltimore Catechism: http://www.catholicity.com/baltimore-catechism/

YouCat: http://www.youcat.org

EWTN: http://www.ewtn.com

Vatican: http://www.vatican.va

Online Tutorial for 1962 Latin Mass: http://www.sanctamissa.org/en/

United States Conference of Catholic Bishops: http://www.usccb.org

Audio Daily Readings: http://www.usccb.org/bible/readings-audio.cfm

2013 Liturgical Calendar: http://www.usccb.org/about/divine-worship/liturgical-calendar/upload/2013cal.pdf