Coniaris has written what is perhaps the best primer on Orthodoxy. As an Anglican, I have often considered becoming Orthodox as our communion becomes beset with problems. Whenever I have a theological question, particularly a sacramental one, I usually consult this book first. It is highly detailed, yet simple and easily understood. A caption in the front of the book suggests it is for those curious about the Orthodox faith, and for confirmation classes, and I think it is excellent for both.
Some of the topics include The Church, Jesus, the Nicene Creed, Icons, Sacraments (i.e. mysteries), Prayer, and the Bible. Coniaris' tone is non-polemical, and he does not condemn others as he lauds the Orthodox faith. This is in contrast to Frank Schaeffer's writings, which are also intended for those discovering Orthodoxy. In some ways all 215 pages of this book read like a historical Christian commentary on major themes, because the writings and wisdom of the ancient Church are generously quoted. However, Coniaris does keep the discussion current as well. He uses many jokes and modern illustrations to explain key theological points. For instance, when describing the mystery (and difficulty) of the Trinity he tells of a boy singing in the choir of a Church that uses the Athanasian creed. When the little boy sang the 8th verse, the boy would sing under his breath, "The Father incomprehensible, the Son incomprehensible, the Holy Spirit incomprehensible, ...the whole thing incomprehensible!"
Overall, this is a fine book for those exploring the Orthodox Church, those in it, and those who just want a taste of ancient Eastern Christian theology. Often in the Western churches the wisdom of Chrysostom, Gregory Palamas, Symeon, and other great theologians are largely ignored. Thus, this book has many purposes, and even if you don't read it all the way through, keep it as a reference book; there is a lot of great theology contained within.