What blur points? 

Blur points are the Gospels and their authors. The first Gospel claimed to be written by Mark, was put down on paper around 70 AC. This Gospel was in the hands of Christians with unknown wirter till around AC140, it is claimed that the first one who pointed out this Gospel belong to Mark was the Hierapolis patriarch Papias. According to Papias Mark hadnt heard any of them from the Jesus but he was telling what he heard from apostle Petrus. But there was a problem that is the identity of Mark was unclear, there were two Marks mentioned in New Testament and there was no evidence that these are the same Marks, so as the testimony of Papias and so as the Mark´s Gospel. Thats one of the blur point.

The other two synoptic Gospels Matthew and Luke attributes to Mark, as they show Mark as source, in Matthew it was added some new imformation that it claims Mark didnt know. Gospel of Luke claimed to be written by the personal doctor of Paul is also in parallel with Mark.

And the last Gospel John which is claimed to be written by apostle John, (the author being apostle John is not accepted except the ones who strictly believe christian dogmas, moreover there was no evidence that it is written by apostle John, thus in the history of christianity many sects refused that it was written by apostle John and declared it untrustable.) is quite different than first three, its style is different much symbolic & mystic. Most of the contradictions in New Testament are between John´s Gospel and the other three. Actually i believe this Gospel´s aim is to helenize Jesus so that it could be acceptable in the eyes of pagan Roman people.

Paul played an important and strong role of further discipleship. But he is not the core of Christianity. He merely was a tool like others were. He called himself a servant of Christ. He was a pharisee of pharisees, a real Jew, appointed apostle to gentiles - such a paradox - illogic thing to say.

With your word  Wrong ! not only important role, actually the whole New Testament shaped according to mind of Paul, it is also clear from the Gospels. Thats why i say this is the religion of Paul.

Lets first clear out one thing. Who are the Nazareans you are talking about? The Jews who followed Jesus were not only from Nazarea.

On his way to Damascus where he was heading to persecute believing Jews with his letters from the high Priest Annas. He was blinded by Jesus and was called to serve Him. For three days he didnt eat and drink until he received his sight back. From that time he earnestly started serving Christ and spreading the Good News about salvation (described in Acts).

Im talking about the people who were following the real apostles of Jesus, Nazareans or not, nothing changes, Jesus´s brother Jacob is one of them. The story you told also written by Paul as well, no other source to confirm this event. In fact he was far away from the belief system of Nazareans but he saw himself in upper position than the Nazareans. He told to people he was chosen when he was in mother´s womb, it seems he had a big ego. He believes that he got divine inspirations from Jesus. Thats why he hadnt talked to community of Nazareans for three years, possibly he thought he didnt need anyone to understand the message of Jesus, during these three years he went to Arabia and nobody knew what he did there, possibly he created this belief system during this period which was later accepted by the counsil of Nicesia under the effect of Roman emperor and all others called heretic.

If you have good arguments for this, bring it on. If you are repeating after some people, then I think you shouldnt touch it. Paul was not in conflict with the gospel or with the message of Christ. He rebuked Peter for his hypocracy. and that is all. (again described in Acts)

Basically im telling what i read and belive it to be the truth, and if i am repeating someone else, i dont care. Of course Paul cannot contradict with the belief system which he created. But he was very angry with the ones who were telling a different Jesus from his own;

Corinthians 2-11:4-5: For if he that cometh preacheth another Jesus, whom we have not preached, or if ye recieve another spirit, which ye have not recieved, or another gospel, which ye have not accepted, ye might well bear with him. For I suppose i was not a whit behind the very chiefest apostles.

Corinthians 2-11:12-14: But what I do, that I will do, that i may cut off occasion from them which desire occasion; that wherein they glory, they may be found even as we. For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ. And no marvel; for Satan himself is transformed into an angel of light.

There had been a big contention between him and Jacob. He had argued with him. It can also be observed in his letters. 

They did speak Aramaic, but they too spoke Greek. At that time Greek was the international language like English today although it was the Roman Empire. This was the hellenised area. The majority of people could speak, read, write in Greek. It was also the language of business, arts and philosophy.

Accepted but these people´s mother tongue was Aramaic however Gospels put down on paper with a quite good Grek which seems strange. 

The Gospels circulated among the first Christians as they were written from one church to another. They were sealed and titled as the gospels from those authors. I suppose they personally knew those apostles and did not need the confirmation as they received those gospels from the apostles themselves.

All of them circulated among christians for years with unknowm writers. The question arises here; why none of these authors abstained to mention their names in their books? And why in other texts of New Testament there is no such situation? Even in the last chapter of New Testament Revelation, writer name is mentioned.

Wrong. The gospels are not the biography of Jesus, but the records of Jesus ministry, his messages and his deeds.

Its not only Paul but also other apostles who delivered such messages. Paul actually was the strict pharisee who was persecuting those converted Jews for spreading the messages about the salvation through the cross.

I didnt understand your very last sentence.