Mary is the Mother of God. She truly is the Theotokos. All she wants is for us to understand, love, and follow her Son, Jesus.
If you're looking for a guide to consecration to Mary, you may want to check out 33 Days to Morning Glory: A Do-It-Yourself Retreat in Preparation for Marian Consecration by Fr Michael E Gaitley (Amazon link).
If you want to go a bit deeper, read St. Louis de Montfort's True Devotion to Mary(Amazon link).