tradition
Catholic Saints
https://www.catholic.org/saints/This web site is a great location for finding reliable information on Catholic saints. It has one of the largest lists of saints available anywhere.
Dei Verbum (Dogmatic Constitution on Divine Revelation)
https://www.vatican.va/archive/hist_councils/ii_vatican_council/documents/vat-ii_const_19651118_dei-verbum_en.htmlThis Vatican II document is the foundation for all Catholic biblical interpretation. Pay particular attention to chapter III, nos. 11-13.
The Incarnation (Catholic Encyclopedia)
https://www.newadvent.org/cathen/07706b.htmThe New Advent Web site hosts the Catholic Encyclopedia, which includes an article on the Incarnation. Below the table of contents, you will find an entire paragraph devoted to the meaning of the word “incarnation,” its use by the Fathers of the Church and Church councils, and its roots in Scripture. Other Greek words found in Scripture that reflect the mystery of the Incarnation are also defined, the most familiar being kenosis in Philippians 2:7. This is the 1917 edition of the encyclopedia, so contemporary thought and theology will not be found here.
Catholic Encyclopedia Article on the Immaculate Conception
https://www.newadvent.org/cathen/07674d.htmThis article provides extensive information on the doctrine of the Immaculate Conception, including scriptural background, proof from Tradition, patristic writings, liturgical celebration, and historical celebration.
Catholic Online Article: “Immaculate Conception and Assumption”
https://www.catholic.com/tract/immaculate-conception-and-assumptionThis article examines both the Immaculate Conception and the Assumption from the point of view of fundamentalist Protestant objections. The article carries a nihil obstat, as well as an imprimatur from Bishop Robert Brom of San Diego.
Assumption of Mary
http://catholicism.about.com/od/holydaysandholidays/p/Assumption.htmThis article provides a short, more contemporary history of the feast and the dogma. A list of related resources is also given, with direct links. One of these links asks, “Is Assumption a Holy Day of Obligation?” (Answer: In the United States, not if it falls on a Saturday or a Monday.)
Lesson One: How a Catholic Starts to Read the Bible
https://stpaulcenter.com/genesis-to-jesus-lesson-1-2/This lesson offers background on how to read and understand the Bible in a way that is consistent with the Catholic tradition. Requires registration to access lessons.
Pentecost
https://www.newadvent.org/cathen/15614b.htmThis link provides a brief description of Pentecost (Whitsunday)
Unity as a Mark of the Church
https://www.newadvent.org/cathen/15179a.htmA website explaining Unity as a mark of the Church. Included is a treatment of some false notions about unity as well as through exploration of why the true Church of Christ is one.