Liturgy of the Hours and the Divine Office, as presented in this beautiful and useful publication, is a powerful prayer. Praying it everyday allows the person praying to become immersed in prayer at all times throughout the day. The product itself is nicely produced and fairly easy to utilize, once some basic knowledge is gleaned. No extra books are really needed. I had ordered The Divine Office for Dodos but found it almost to be insulting me...because my breviary (this copy of the Divine Office) makes it very easy to pray. So just order this 4 book series and get going!