Here are some additional resources that can be used to prepare for a Marian Consecration.

Books
At Prayer with Mary from RENEW International – for small Christian Communities, small group studies, and individuals.

Marian Consecration for Children: Bringing Mary to Life in Young Hearts and Minds by Carrie Gress –  for schools, children, families.

Prayers
Marian prayers – via Catholic News Agency
Novena to the Immaculate Heart of Mary – via EWTN
Novena to the Immaculate Heart of Mary – via PrayMoreNovenas.com
How to Pray the Rosary – via EWTN