The book explains various doctrines in bite-size pieces. That was tough to do. Condensing the material the way we did in this book was a Herculean task. You point out in the preface of the book that no Christian can really avoid theology. That's exactly right.
Theology is unavoidable.
Every Christian has a theology. Every Christian is involved in learning about the things of God. That's a given. It may be entirely negative, but he or she has a view of God. And how we understand God informs how we understand everything else.