By tradition, the Catholic Church dedicates each month of the year to a certain devotion. The month of October is dedicated to the holy Rosary as the Feast of Our Lady of the Rosary falls on October 7th. The best way to celebrate the month is, of course, to pray the Rosary. 

The Rosary draws its mysteries from the New Testament and is centered on the great events of the Incarnation and Redemption with each decade referring to an event in the life of Jesus and Mary. The Mysteries of the Rosary give us “thumbnails” of the life of Christ and his Mother.

• The Joyful Mysteries are taken mostly from Saint Luke’s Gospel in the New Testament. They involve the joyful events of Jesus’ childhood.
• The Luminous Mysteries bring a deeper understanding to the public life of Jesus. They fill in the blanks between the childhood of Jesus and His suffering and death on the cross.
• The Sorrowful Mysteries remind us of how much Jesus loves us. They recall how He suffered and died just for us.
• The Glorious Mysteries tell us what happened after Jesus died-His Resurrection, the descent of the Holy Spirit and the love Jesus had for his Mother.

External resource: https://www.catholic-kids.com/picturemysteries.html