Here is an extract from the book Brief Catechism on Fatima, published by Kolbe Publications. It offers 33 questions and answers divided in four chapter: The Apparitions at Fatima, The Secret of Fatima, The Third Secret & the Crisis in the Church, and Practicing Devotion to the Immaculate Heart.
Devotion to Mary is necessary for the Baptized because by Baptism we become members of Jesus Christ and we must imitate Him. But Christ honored Mary, obeyed her as His Mother and made her Queen over His Kingdom. Therefore, we too must honor her, obey her as our Mother and serve her as our Queen.
We practice this devotion chiefly by the practice of the Five First Saturdays, by saying the Rosary every day and by wearing the Scapular, and by having the intention to make reparation to the Immaculate Heart in all our undertakings and sufferings.
The 5 first Saturdays consists in 4 things:
It must be remembered that this devotion is accompanied by the incredible promise of Our Lady to Sr. Lucia: “I promise to assist them at the hour of death with all the graces necessary for the salvation of their soul.”
The Five First Saturdays were requested by Our Lady to make reparation for 5 sins against her Immaculate Heart:
Saying the Rosary daily makes reparation to the Immaculate Heart of Mary because at Fatima she requested the Church to say the Rosary daily for the salvation of souls. Thus, it is an act of obedience to Mary. Furthermore, by praying the Rosary devoutly, we learn to hate and overcome our sins, and to love and imitate Christ.
By wearing the Scapular we show the world a sign of our Catholic Faith, we show God a sign of our devotion to Our Lady, and it is a sacramental of her promise to help us now and at the hour of our death. We should also remember the Scapular promise that no one wearing the Scapular at the hour of death will be allowed to perish eternally in the fires of hell. By Mary’s intercession, the soul will receive the succor of Grace to make the acts of Faith, Hope and Charity necessary to salvation.
While any act of Devotion done with the intention of making Reparation to the Immaculate Heart of Mary is an act of reparatory devotion to Mary, there are two of greater importance:
The Consecration of the home to the Sacred Heart of Jesus and the Immaculate Heart of Mary is a devotion promoted by 4 Popes of the XXth century and consists in asking a Priest to preside over the Ceremony of Consecration in one’s home. The Ceremony should be prepared by 3 days of prayer and involves the enthronement of the images of the Sacred Heart of Jesus and the Immaculate Heart of Mary in one’s home.
The consecration consists in a complete gift of self to Mary with the goal of serving Our Lord Jesus Christ to the best of one’s ability for the greater honor and glory to God. This gift of self is so complete that we say one is a slave of Mary, for one is entirely submitted to her, becoming her property, to use as she pleases for the greater glory of her Divine Son. It is also a renewal of our baptismal promises, in order to offer ourselves more perfectly to Jesus Christ, our Savior and King.
To prepare for the triumph of the Immaculate Heart of Mary, we must pray very much for the pope, for the ultimate solution to the present crisis in the Church, the conversion of Russia and world peace, depend on the pope. Our Lady asked only the pope to consecrate Russia, in union with all the bishops of the world, to her Immaculate Heart.
“In the end, my Immaculate Heart will triumph. The Holy Father will consecrate Russia to Me, and she will be converted, and a period of peace will be granted to the world.”
Source: Brief Catechism on Fatima by Fr. Stehlin, SSPX