What is Reformed Theology?: Understanding the Basics

Wonderful summary and introduction. Doesn't get caught in the weeds. Convincing and clear.
Here's some quotes I loved:

“If it is the Word of God, it does not err. If it errs, it is not the Word of God.” p.56

“The fundamental loss of a desire for God is the heart of original sin” p.159

“Happily, salvation's sureness does not rest on the believer's sureness of his salvation ... it is critical to maintain that justifying faith and the experience of doubt often coexist” p.241

“His sovereign purpose to save his elect from the foundation of the world is not frustrated by our weakness.” p.245