Let me recommend
http://www.scripturecatholic.com/index.html
... one of the most comprehensive Catholic apologetics websites on the internet.
To quote from the Home Page:
ScriptureCatholic.com provides over 2,000 Scripture citations from the Old and New Testament that explain and defend the teachings of the Catholic Church. This site also provides hundreds of excerpts from the writings of the early Church Fathers (1st through 8th centuries). These writings explain the Fathers' interpretation of Scripture and demonstrate that the early Church was unequivocally Catholic. Through the study of Scripture and the Church Fathers, we see that, not only is the Catholic faith biblical, Catholicism is Bible Christianity par excellence.
Because the Old and New Testament Scriptures are the divinely-revealed, written Word of God, Catholics venerate the Scriptures as they venerate the Lord's body. But Catholics do not believe that God has given us His divine Revelation in Christ exclusively through Scripture. Catholics also believe that God's Revelation comes to us through the Apostolic Tradition and teaching authority of the Church.
What Church? Scripture reveals this Church to be the one Jesus Christ built upon the rock of Saint Peter (Matt. 16:18). By giving Peter the keys of authority (Matt. 16:19), Jesus appointed Peter as the chief steward over His earthly kingdom (cf. Isaiah. 22:19-22). Jesus also charged Peter to be the source of strength for the rest of the apostles (Luke 22:32) and the earthly shepherd of Jesus' flock (John 21:15-17). Jesus further gave Peter, and the apostles and elders in union with him, the power to bind and loose in heaven what they bound and loosed on earth. (Matt. 16:19; 18:18). This teaching authority did not die with Peter and the apostles, but was transferred to future bishops through the laying on of hands (e.g., Acts 1:20; 6:6; 13:3; 8:18; 9:17; 1 Tim. 4:14; 5:22; 2 Tim. 1:6).
By virtue of this divinely-appointed authority, the Catholic Church determined the canon of Scripture (what books belong in the Bible) at the end of the fourth century. We therefore believe in the Scriptures on the authority of the Catholic Church. After all, nothing in Scripture tells us what Scriptures are inspired, what books belong in the Bible, or that Scripture is the final authority on questions concerning the Christian faith. Instead, the Bible says that the Church, not the Scriptures, is the pinnacle and foundation of the truth (1 Tim. 3:15) and the final arbiter on questions of the Christian faith (Matt. 18:17). It is through the teaching authority and Apostolic Tradition (2 Thess. 2:15; 3:6; 1 Cor. 11:2) of this Church, who is guided by the Holy Spirit (John 14:16,26; 16:13), that we know of the divine inspiration of the Scriptures, and the manifold wisdom of God. (cf. Ephesians 3:10).
I hope that this site gives Catholics the biblical and patristic knowledge they need to answer questions about their faith, and helps them rediscover the truth of their faith as taught by Sacred Scripture. I further pray that non-Catholics come to recognize that God's gift of salvation comes only through Jesus Christ and His Catholic Church. I also pray that each one of us grows more deeply in love with Jesus as we become better Bible Christians (or, rather, "Scripture Catholics").
+Instaurare omnia in Christo+
John Salza
NOTE: John generally updates this site every March, June, September and December