Gregory Thaumaturgus: Part II: Dubious or Spurious Writings: A Sectional Confession of Faith
This short work is excellent, whoever wrote it. In quick, readable segments this work lays out some key ideas behind our beliefs. For example:
No one, therefore, can know God unless he apprehends the Son.The author emphasizes the Divinity, humanity, and Triune Unity of the Lord, especially the place of Christ in His entrance into the world and His authoring and Lordship of creation.
Read this, it's short and excellent!