Here are eleven books (in no particular order) that will help you understand Christianity better.
The Defense Never Rests: A Lawyer’s Quest For The Gospel – (Craig Parton)
Mere Christianity – (C.S. Lewis)
History, Law and Christianity – (John Warwick Montgomery)
The Problem Of Pain – (C.S. Lewis)
Living By Faith: Justification And Sanctification – (Oswald Bayer)
God At Work: Your Christian Vocation In All Of Life – (Gene Edward Veith)
On Christian Liberty – (Martin Luther)
Dying to Live: The Power of Forgiveness – (Harold L. Senkbeil)
The Spirituality Of The Cross – (Gene Edward Veith)
Why I Am A Lutheran: Jesus At The Center – (Daniel Preus)
Scriptural Baptism : A Dialog Between John Bapstead And Martin Childfont – (Uuras Saarnivaara)