There are three main schools of thought when it comes to Sacred Scripture and Its Canon: Catholic/Orthodox, Protestant, and the Ethiopian Orthodox Tewahedo Church.
In the Catholic and Orthodox Churches the Holy Scriptures are seen as one of the two sources of Theology in the Church, the second being Holy Tradition. However, Holy Tradition can NEVER contradict Holy Scripture. As far as the Catholic/Orthodox Canon goes we have a total of 73 books, whereas Protestant have 66. We have the normal Protestant Canon plus: Tobit, Judith, Wisdom, Sirach, Baruch, 1 Maccabees, and 2 Maccabees.
The Protestant Church views the Bible as the only authority on church teaching.
The Ethiopian Orthodox Tewahedo Church has the Catholic/Orthodox Canon plus: Esdras, Prayer of Minasse, 1 Enoch, 1 2 and 3 Meqabyan, and Psalm 151.