Wikipedia is somewhat controversial. Nevertheless, I have usually found it to be a reliable source of information (a bit of which, on certain topics, I myself have supplied).
My friend and colleague, Mother Charlie, Archabbas of the Order of Celtic Benedictines (see link on the right), called the following to my attention (and no, I contributed nothing to this particular article):
"Eastern Orthodox Christian theology"
I particularly like the lede paragraph:
"Eastern Orthodox Christian theology is the theology particular to the Eastern Orthodox Church. It is characterized by monotheistic Trinitarianism, belief in the Incarnation of the Logos (Son of God), a balancing of cataphatic theology with apophatic theology, a hermeneutic defined by Sacred Tradition, a concrete ecclesiology, a robust theology of the person, and a therapeutic soteriology."
And then, there is this, from Fr. Stephen:
"The Fullness of Faith"
One caveat: in the above, Father goes beyond a "concrete ecclesiology" to a typically Byzantine Orthodox closed ecclesiology which he then conflates with the doctrine of the Communion of Saints. However, it is better to know one place where the concrete Church actually is, even if one finds it only there, than to either, in effect, deny the existence of that real, historical, continuous Church (Evangelicalism), or (as in the case of Mormonism) to find it where it does not exist.