The Rosary are prayers beads. On the Rosary beads they have lots of Hail Marys, Our Fathers and Glory be. First you say the Our Father then you say the 10 Hail Marys and lastly the Glory Be. You don’t need to count your fingers while you’re saying the prayers, you can just use the Rosary by moving your fingers to the next bead. For example like you say the 10 Hail Mary’s you can move your fingers to the next bead when you finish saying it. You can say this at home and at a funeral, before they take the body to the church.
Every Rosary has a crucifix and a holy medal on it. You say the sign of the cross in the beginning before you say the Our Father, Hail Mary and Glory be and when you finish you say the sign of the cross at the end