The purpose of the Rosary is to help keep in memory certain principal events in the
history of our salvation. There are twenty mysteries reflected upon in the Rosary, and
these are divided into the five Joyful Mysteries (said on Monday and Saturday), the five
Luminous Mysteries (said on Thursday), the five Sorrowful Mysteries (said on Tuesday
and Friday), and the five Glorious Mysteries (said on Wednesday and Sunday).
As an
exception, the Joyful Mysteries are said on Sundays during Christmas, while the
Sorrowful Mysteries are said on the Sundays of Lent.
The question is sometimes asked, why, of all the incidents in our Lord’s life, the Rosary
only considers these particular twenty. The mysteries of the Rosary are based on the
incidents in the life of Our Lord and His Mother that are celebrated in the Liturgy.
There
is a parallel between the main feasts honoring our Lord and his Mother in the liturgical
year, and the twenty mysteries of the Rosary. Consequently, one who recites the twenty
mysteries of the Rosary in one day reflects on the whole liturgical cycle that the Church
commemorates during the course of each year. That is why some of the Popes have
referred to the Rosary as a compendium of the Gospel. One cannot change the mysteries
of the Rosary without losing the indulgences that the Church grants for the recitation of
the Rosary.
(taken from here)
Make the Sign of the Cross and say the “Apostles’ Creed”
Say the “Our Father”
Say three “Hail Marys” for Faith, Hope, and Charity
Say the “Glory Be”
Announce the First Mystery and then say the “Our Father”
Say ten “Hail Marys” while meditating on the Mystery
Say the “Glory Be” (Optional: Say the “O My Jesus, forgive us our sins, save us from the fires of hell and lead all souls to heaven, especially those who most need thy mercy” prayer requested by Mary at Fatima)
Announce the Second Mystery; then say the “Our Father” and repeat these steps as you continue through the remaining Mysteries.
Say the “Hail Holy Queen” and verse
Say the “Final Prayer”
Besides the Indulgences attached to the Rosary, Our Lady revealed to St. Dominic and Blessed Alan de la Roche additional benefits for those who devoutly pray the Rosary.