Recommended books
These are a few hand-picked books.

Reasons for God (Tim Keller)
Exploring Christianity

reasonforgodIs Christianity credible?  Are all the atheist bestselling books right?  Do Christians have a 'blind' faith that ignores reason and evidence?  Tim Keller deals with the 21st century persons doubts and asks us to consider doubting our doubts.

 
Case for Christ (Lee Strobel)
Exploring Christianity

caseforchristAll of Christianity's claims hinge on one historical fact-- the bodily resurrection from the dead of a man, Jesus Christ.  If it's true, it changes everything and requires belief and repentance from every human being.  If it's false, then "your faith is futile and you are still in your sins" and Christians "of all people most to be pitied".

The author retraces his conversion to Christ by hunting down the historical evidence for the resurrection.

 
Knowing God (J.I. Packer)
Theology
knowinggodClassic on God.
 
Westminster Confession of Fatih
Theology

westminsterThe great truths of the Bible written out 350 years ago and still blessing Christians and feeding their faith today.

 
Business for the Glory of God (Wayne Grudem)
Arts, culture, business

Business to the Glory of GodSub-titled: The Bible's Teaching on the Moral Goodness of Business

Business can get a bad rap as 'ungodly' or 'morally neutral'.  It's neither, but rather good and from God.  The author shows how the different parts of business (ownership, profit, employment, etc.) are good but also can be distorted by sin.

 
Just Do Something (Kevin DeYoung)
Applied Christianity

Just Do SomethingSub-titled: A Liberating Approach to Finding God's Will

Sub-sub-titled: How to Make a Decision Without Dreams, Visions, Fleeces, Open Doors, Random Bible Verses, Casting Lots, Liver Shivers, Writing in the Sky, etc.

 
Putting Amazing Back into Grace (Michael Horton)
The Gospel, or Good News
puttingamazingSubtitled: Embracing the Heart of the Gospel
 
Mere Christianity (C.S. Lewis)
Exploring Christianity
merechristianityThis book has led many searchers for truth into Christ.
 
The Cross of Christ
Theology
crossofchristJohn Stott explains the center of Christianity, the Cross.
 
Pleasures of God (John Piper)
Theology
pleasuresofgodGod is the happiest, most pleasure-filled being in the universe!  But what is he so pleased with?  And how can we know God until we know what he likes?
 
Shepherding a Child's Heart (Tedd Tripp)
Marriage and Parenting

shepherdingchildsheartYour kids are sinners, but they have a savior.  How do you transfer that to them?

Also read: Instructing a Child's Heart (Tedd and Margy Tripp) about giving your children a biblical framework and worldview to understand their world and your parenting.

 
The Enemy Within (Kris Lundgaard)
Discipleship

The Enemy WithinSub-titled: Straight Talk About the Power and Defeat of Sin

Honest about the power of indwelling sin, honest about the need to go to war with it, honest about the hope of gospel for us.

 
The Prodigal God (Tim Keller)
The Gospel, or Good News
prodigalgodAre you overwhelmed by the love of God for dirty sinners?  What about for self-righteous sinners?  Skeptics and believers can be refreshed by this book's laying out of the good news of Jesus Christ for sinners like us.