How do you pray the Rosary?

Make the Sign of the Cross and say “In the name of the Father, and of the Son, and of the Holy Spirit. Amen.”
Say the Creed.
Say one Our Father, three Hail Marys, and one Glory Be.
Announce the first Mystery. If possible, make a short meditation on the subject of the mystery. Then pray an Our Father, ten Hail Marys, and the Glory Be. While it is not a formal part of the Rosary, it has become usual to pray the “Fátima Prayer” taught by Our Lady to the children of Fátima in 1917 (see below).
This pattern is then repeated on the decades for each of the subsequent mysteries of the Rosary.
After you have completed all the decades, it is usual to say the Hail, Holy Queen, and other prayers according to custom, though these are not formally part of the Rosary, nor obligatory.
Make the Sign of the Cross and say, “In the Name of the Father, and of the Son, and of the Holy Spirit. Amen.”

Fátima Prayer: "O My Jesus, forgive us our sins, save us from the fires of hell. Lead all souls to Heaven, especially those most in need of Thy mercy."

HOW TO PRAY THE ROSARY PREPARATION CONCLUDING PRAYERS