It is considered to be the Oral Torah. It was passeddown from Rabbi's to students before being written down.
It contains systems of laws based on the teachings of the Torah, with explanations on how they should be practiced in daily life.
Some Jews believe it was given by God to Moses as the written Torah and is therefore sacred.
It gives interpretation of the Torah and includes casestudies on how to observe the 613 mitzvot
Many Jews study the Talmud as it is believed to be a sacredtext and gives an understanding of Jewishbelief and practice. The casestudies are used to helpmakedecisions on how the 613mitzvot should be observedtoday.