By appearing to Saint Catherine, a Daughter of Charity, Mary essentially entrusted to the Daughters of Charity and the priests of the Congregation of the Mission the work of spreading this devotion to her through her medal. In order to do so, an association was formed shortly after the first medals were distributed. The Association was established at the motherhouse of the Congregation of the Mission in Paris.
Gradually, other associations were established elsewhere in the world. Pope Pius X recognized these associations in 1905 and approved a charter in 1909.
The Association has as its end to attributing to the Virgin Mary, conceived without original sin, the honor that is due her; achieving their own sanctification, and exercising its apostolate, both of which the Holy Medal challenges and helps as much for the symbolism it shows as by virtue of those who wear it.
The International Miraculous Medal Association encourages you to trust in the power of the Blessed Mother in her role as intercessor by praying regularly. For a different experience of the Novena prayers, instead of reading or memorizing from the little booklet, you may prefer to listen and ponder their meaning as the prayers are recited in this YouTube video by Fr. Carl Pieber, C.M.