HAVANA (Reuters) - How did a well-to-do country boy with a conservative education called Fidel Castro turn into a fearless rebel and enduring leader of one of the world's last Marxist states? For Finnish documentary-maker Folke West, granted rare access to early Cuban state archives, the answer lies in Castro's formative years, long before he became a Communist. His 2-hour, 50-minute "Young Fidel" traces the Cuban president's life from his father's ranch through Jesuit schools and volatile university politics to a nearly suicidal raid on Cuba's second largest military garrison, prison and finally exile in 1955. "Most biographies jump most...