Alister McGrath has written an excellent, helpful volume in this introduction text to Christian Systematic Theology. Here's a quick partial listing of what the book includes and how it's structured:
Part 1: Landmarks: Periods, Themes, and Personalities of Christian Theology
-includes chapters on The Middle Ages, Refomation, Modern Period, et. al.
Part 2: Sources and Methods
-includes chapters on Preliminaries, Sources of Theology, Knowledge of God (Natural and Revealed), Philosophy and Theology, et. al.
Part 3: Christian Theology
-includes chapters on the Doctrine of God, Doctrine of the Trinity, Doctrine of the Person of Christ, the Doctrine of Salvation in Christ,… Read more