What is the reliable source to refer to for a detailed and accurate interpretation of the Quranic stories, and what are the details of the story of the birth of the Christ and Virgin Mary’s conception of him, and did the Christ continue to speak as an infant, and what are the details of the flood of our master Noah and did it drown the entire earth, and how did those with him on the ark continue to live, and how long did the building of the ark take and where did that happen?

There is no definitive text that specifies the duration of Mary's pregnancy with Jesus or whether Jesus continued to speak after his birth. As for the story of Noah, we only know what Allah has related in the Qur'an, such as in Surah (definition) Hud. The verses mention Allah's command to Noah to build the ark, the ridicule of his people, the flood, the drowning of his son who refused to board, and the ark coming to rest on al-Judi. Surah As-Saffat also indicates that Noah's progeny were the survivors.