People seem to have liked it. One friend downloaded the Church of England’s Daily Prayer App. Another friend’s wife pulled Tim Keller, Prayer, down off the shelf. I, myself, have been more attentive at prayer as well.
The sources are my usual eclectic pot of Anglo-Patristic/Orthodox readings — John Wesley, George Herbert, St Augustine of Hippo, the Apostolic Tradition, the Book of Common Prayer, John Cassian, The Way of a Pilgrim, all get mentioned, and there is a certain underpinning provided by Metropolitan Anthony Bloom and Metropolitan Kallistos Ware. Bloom’s book Living Prayer is one that I will spend my life on.
I hope that it is a blessing to your own prayer life.