The Mass consists of:
The Intro, a combination of opening greeting prayers.
The Confiteor, an admission of sins and request for absolution.
The Gloria, a prayer celebrating the Glory of God.
The readings:
A reading from the Old Testament
A Reading from the Epistles or Acts
The Gospel, a reading from one of the four Gospels.
The Homily, or Sermon, where the Celebrant or another person speaks to the Congregation either on one of the readings, or on a subject which is a topic for the Mass.
The Creed, a prayer said after the homily professing the beliefs of the Church.
Prayers of the Faithful, where specific petitioning prayers for the week or the Mass are said.
The Offertory, where the collection is taken up and the bread and wine are presented to the Priest.
Preparation of the gifts, prayers of thanks over the bread and wine.
The Consecration, prayers over the bread and wine in memory of the Last Supper, in which the bread and wine become the Body and Blood of Christ.
Prayers in preparation for Communion, including the Doxology and the Lord’s Prayer
Communion, in which the Congregation shares in the Consecrated bread and wine.
Closing prayers and Blessing.
Takes a little less than an hour.