When a fool comes into the study hall and sees everyone busy learning, he asks, “How does a person start learning Torah?” They tell him: “First he learns to read. Then he studies the Five Books of Moses, then the Prophets, then the rest of the written Torah, then he goes on to the Oral Torah, the Talmud, the laws and the aggada…” The fool says, “When will I ever learn all this?” and he runs away. But the wise man studies a chapter a day… until he completes the entire Torah.
MIDRASH RABBA DEVARIM 8:3