There are basically 66 books of the bible that is used by protestants. The catholic Church uses the 14 books of the Apocrypha which is included in the original translation of the 1611 version of the bible that was translated by Charles Stuart James, also known as King James.
There are a series of other writings that are disputed books not included in most bibles with the exception of the Eastern Ethiopian Orthodox churches. In that regard, books such as the book of Adam and Enoch also referred to as Pseudepigrapha, falsely-attributed works, texts whose claimed author is not the true author, or a work whose real author attributed it to a figure of the past.
Pseudepigraphy covers the false ascription of names of authors to works, even to authentic works that make no such claim within their text. In biblical studies, the term pseudepigrapha typically refers to an assorted collection of Jewish religious works thought to be written c. 300 BC to 300 AD.
The Bible was written by approximately 40 men of diverse backgrounds over the course of 1500 years. Isaiah was a prophet, Ezra was a priest, Matthew was a tax-collector, John was a fisherman, Paul was a tentmaker, Moses was a shepherd, Luke was a physician. Despite being penned by different authors over 15 centuries, the Bible does not contradict itself and does not contain any errors.
Few of the books of the Bible specifically name their author. Here are the books of the Bible along with the name of who is most assumed by biblical scholars to be the author, along with the approximate date of authorship:
Genesis, Exodus, Leviticus, Numbers, Deuteronomy - Moses - 1400 B.C.
Joshua - Joshua - 1350 B.C.
Judges, Ruth, 1 Samuel, 2 Samuel - Samuel/Nathan/Gad - 1000 - 900 B.C.
1 Kings, 2 Kings - Jeremiah - 600 B.C.
1 Chronicles, 2 Chronicles, Ezra, Nehemiah - Ezra - 450 B.C.
Esther - Mordecai - 400 B.C.
Job - Moses - 1400 B.C.
Psalms - several different authors, mostly David - 1000 - 400 B.C.
Proverbs, Ecclesiastes, Song of Solomon - Solomon - 900 B.C.
Isaiah - Isaiah - 700 B.C.
Jeremiah, Lamentations - Jeremiah - 600 B.C.
Ezekiel - Ezekiel - 550 B.C.
Daniel - Daniel - 550 B.C.
Hosea - Hosea - 750 B.C.
Joel - Joel - 850 B.C.
Amos - Amos - 750 B.C.
Obadiah - Obadiah - 600 B.C.
Jonah - Jonah - 700 B.C.
Micah - Micah - 700 B.C.
Nahum - Nahum - 650 B.C.
Habakkuk - Habakkuk - 600 B.C.
Zephaniah - Zephaniah - 650 B.C.
Haggai - Haggai - 520 B.C.
Zechariah = Zechariah - 500 B.C.
Malachi - Malachi - 430 B.C.
Matthew - Matthew - A.D. 55
Mark - John Mark - A.D. 50
Luke - Luke - A.D. 60
John - John - A.D. 90
Acts - Luke - A.D. 65
Romans, 1 Corinthians, 2 Corinthians, Galatians, Ephesians, Philippians, Colossians, 1 Thessalonians, 2 Thessalonians, 1 Timothy, 2 Timothy, Titus, Philemon - Paul - A.D. 50-70
Hebrews - actually is unknown, it is attributed to Paul but is may have been written by Luke, Barnabas, or Apollos - A.D. 65
James - James - A.D. 45
1 Peter, 2 Peter - Peter - A.D. 60
1 John, 2 John, 3 John - John - A.D. 90
Jude - Jude - A.D. 60
Revelation - John - A.D. 90