Christians from where does this resurection concept come in the noodle book?

Resurrection is really not a hard concept to understand: it's the giving of immortal physical life to one who was physically dead. Your question seems to be more about the origins of its importance for Christianity. It arose from within the Jewish worldview as a concrete expression of the goodness and power of the God of Israel. He created the world good, but man sinned and stuffed it up. His result/punishment was death, both emnity with God and physical death. However, that same God is gracious, so we can expect him to reverse the condition of death in his creation. He is the only one who has the power to do it, too. This ultimately leads to the personal expectation of resurrection---which is a restoration to immortal physical life. Resurrection is the solution to the problem of death.