Some books which have helped in my Christian walk:

The Gospel According to Jesus by John MacArthur

Holiness by J.C. Ryle

Foundations of the Christian Faith by James Montgomery Boice

The Sermon on the Mount by D. Martin Lloyd-Jones

The Charismatic Illusion by Dr. Peter Masters

Pilgrim's Progress by John Bunyan

Lectures on Calvinism by Abraham Kuyper

Feminine Appeal by Carolyn Mahaney