Written by the Torah scholar Prof. Yehuda Eisenberg A Practical introduction to the traditional literature. The book traces the road traveled by Torah as it was passed down from the Sinai revelation to our day. The reader finds out how the Mishnah and the Talmud were compiled, learns the names and structure of Talmudic treatises, and gets an overview of the Cabbala, the authority of the prophets and the Sanhedrin, and the role of Oral Torah in elucidating the Written Torah. What is Torah is a useful reference book on Judaism.