Tanakh
The Written Torah is often called the Tanakh, an acronym of Torah (T) for the Five Books of Moses, Nevi'im (N) for the collection of history and oracles of the Prophets and Ketuvim (K), which is the book of Writings containing history, poetry and other writings. This is the Hebrew Bible, referred to popularly as the Old Testament.
The Bible is considered to have many layers of meanings, much like a person wearing clothes. There are the clothes, then there is the skin, then the skeleton etc. Because of the many layered nature of the Bible it is also referred to as the PARDES - an acronym for the words Peshat, Remez, Derash and Sod. These words refer to the literal meaning, the allegorical meaning, the moral or homiletic meaning and finally the mystical or anagogic meaning.
The Five Books of Moses is also referred to as the Chumash for the Hebrew word for five. As mentioned, the Books of Moses are believed to have been divinely transmitted by God to Moses at Mt. Sinai approximately 3500 years ago. Modern scholarship believes that the version we have today is a mixture of divine inspiration and the work of editors throughout the centuries. The books are individually known as Genesis (Beresheit), Exodus (Shemot), Vayikra (Leviticus), Numbers (Bamidbar), and Deuteronomy (Devarim).
The books of the Prophets (Nevi'im) contain the recording of direct prophecies given by God to His chosen prophets. Though there are recordings of prophecies throughout the Bible, these collections are more extant in that they include long prophetic utterances, larger collections and some biographical material. Because of the varying amounts of materials the books are further classified as the books of the Major Prophets and then the Minor Prophets.