I have developed a keen interest in Othodox (as in Eastern Christian) theology, especially the concept of theosis. I've read a number of books recently, some ancient and others more recent. I find the work of Vladimir Lossky most intriguing. I am, however, still trying to fully understand both the doctrine and the implications for us as Christians. What I was looking for was a basic guide that would help me better understand the doctrine of theosis, as well as the broader theological concerns that envelop the doctrine. In addition, I wanted to know who I should be reading. All of that is discussed in a way that is understandable to someone outside the Orthodox community (though it does require a bit of background in historical theology and philosophy)
The author, Norman Russell, is well known for his work on theosis, Palamism (Gregory Palamas), and translation of Greek texts into English. If interested in this conversation (and you should), this is a good place to start. It's readable and insightful.