I wanted to learn about muslim faith. is there any other books to consider than the Quran?

Of course no Greek words were ever used in the New Testament to sum up the doctrine of the One Being of God subsisting in three uncreated 'persons', because it is the LATIN word 'trinitas' that was used by Christians who were contending for the faith of the first Century Christians, regarding the deity of Jesus Christ. Those first Century Christians wrote the New Testament in Greek (with a smattering of Aramaic) because Greek was the language of Empire. They worshipped Christ as God - not a different God to the Creator, but the Word of God, "who was in the beginning with God" who IS God, and who made everything that was made.

That is what the apostle John wrote, by inspiration of the Holy Spirit in John 1:1-14. This Word became flesh, as Jesus Christ, and slowly the Christians began to grasp that He was God incarnate - God in the flesh. That is what the opening chapter of John's gospel portrays.

Only after Jesus' resurrection did this awareness take such a grip (John 20:28) that, by the turn of the first Century, pagan ruler Pliny the Younger wrote to Emperor Trajan about how Christians sing hymns of worship to Jesus Christ and adore Him as "a god". Of course, those who are polytheistic never get it - that you cannot have two, or three, or more gods in Christianity, because that would be polytheism - which the Bible condemns. Only if Jesus is the same God as the Creator (Genesis 1:1-3) is monotheism maintained.

That was the issue that developed when some Christians just could not get it either and wandered into the unbiblical idea that Jesus was created (a creature)! Long before 160 AD the debate was raging, so when Tertullian defended the trinitarian stance and did all his writing in Latin, we find the Latin for Trinity being used by him (along with other trinitarian language). That explains why it was the Latin 'trinitas' that was used by Christians.

But the whole concept of the Trinity was only ever based upon what the entire Bible (ancient Hebrew and koine Greek) revealed about the glorious nature of the Son of God - God incarnate.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.