1. Lutheranism teaches justification by faith alone. How do Catholics view salvation? How is a person saved and what means you are saved?
We are saved by the grace of God through faith and works
The normal way a person is saved is through the Sacraments
This is a very biblical view
Christ commands us to love God above all and love our neighbor as we love ourselves, Love is not just a feeling but choosing to do what is good for others, we see from Christ talking about separation of the sheep from the goats that actions matter, that not all those who say “Lord Lord” will be saved, we see from the lists of sins given by St Paul that bad actions will damn is to Hell
The Protestant view of Sola Fide is not biblical and is not found in any ancient church
2. What are the Apocraphyl books and why should they be in the canon?
They are books that were in the Greek translation of the Jewish Scripture called the Septuagint, looking at the Gospels talking about the Pharisees and Scribes and Herodians and Sadducees and Zealots we can see that Judaism at the time of the Apostles was not monolithic and different sects had different canons of Scripture
The New Testament was written in Greek so the Septuagint was used when the Old Testament was quoted in the New Testament, while some of these books were controversial, there were also controversy about having Revelation counter as Scripture, or leaving out the Epistles of Clement, the canon of Scripture did not just fall out of the sky and everyone accepted it without question, there were long and arduous debates, so just because these books were questioned does not negate their place in Scripture
3. Why do you pray to Mary and other Saints?
Because it has born such good fruit
So many have been led closer to Christ through their devotion to the Saints
Because we believe the Church is one, and we are still united in some ways to the members of the Church in heaven
Because the Bible says that the prayer of the righteous man alleviates much, and who is more righteous then those who now share in the beatific vision?
4. Why do Priests abstain from marriage?
They are following the example of our Lord who did not take a wife while He ministered to the lost sheep of the house of Israel
They are following the example of St Paul who recommends that the unmarried stay unmarried
5. What other differences exist?
Oh, lots of things, but they are more subtle and harder to explain, I will try to come back to this latter