Tom,
Below is a list you should find helpful. The first is a link to Bishop Kallistos' book which is now online. I highly recommend the Akathist to the Name of Jesus, The Way of a Pilgrim and The Jesus Prayer by Fr. Lev Gillet to start. I believe all the below books are available from Light and Life Publishing:
http://www.light-n-life.com/index.aspThe Power of the Name: The Jesus Prayer in Orthodox Spirituality
By Bishop Kallistos Ware
http://www.oodegr.com/english/psyxotherap/dyn_onom1.htmThe Acathist Hymn to the Name of Jesus
by Archbishop Joseph Raya
Introduction to the Jesus Prayer
by Princess Ileana
The Jesus Prayer in Eastern Spirituality
by Gabriele Winkler
The Jesus Prayer: A Gift From the Fathers
by Fr. David Hester
The Jesus Prayer
by A Monk of the Eastern Church (Fr. Lev Gillet)
Revised edition with a foreword by Bishop Kallistos Ware
On the Invocation of the Name of Jesus
by A Monk of the Eastern Church (Fr.Lev Gillet)
On the Prayer of Jesus
by Ignatius Brianchaninov. Foreword by Bishop Kallistos Ware
The Way of a Pilgrim and the Pilgrim Continues on His Way
translated by H. Bacovcin
The Way of a Pilgrim: The Jesus Prayer Journey
translation and annotation by Gleb Petrovsky
Writings from the Philokalia: On Prayer of the Heart
translation by E. Kadloubovsky and G.E.H. Palmer