The battle for the Culture of Life is, under all the human actions, a spiritual battle. Rosaries For Life suggests we take up the spiritual weapon of the rosary. It makes good sense to me that this prayer focused on the mystery of God-made-man should be a means by which God once again redeems man.
One book I have found useful to focus my attention while I pray is The Rosary: Chain of Hope by Fr. Benedict Groeschel. Beautifully illustrated with art masterpieces, this book features simple yet profound meditations on each mystery of the rosary as well as prayers for each decade. An appendix includes the full text of Pope John Paul II's Rosarium Virginis Mariae.
If you pray the rosary already, the culture of life would be an excellent intention to add. If not, this is a great time to start!