For Those Wanting to Learn More about Christianity

The Bible -- The Very Word of God (Prov. 30:5) -- Read Online

Ultimate Questions by John Blanchard -- Read Online

Why I Believe in God by Cornelius Van Til -- Read Online

Holiness by J.C. Ryle -- Read Online

Knowing God by J.I. Packer

Theology

The Holiness of God by R.C. Sproul

Redemption Accomplished and Applied by John Murray

Summary of Christian Doctrine by Louis Berkhof (Introductory) -- Read Online

The Doctrine of God by John Frame (Advanced)

Christianity and Liberalism by J. Gresham Machen -- Read Online

Cur Deus Homo by Anselm of Canterbury -- Read Online

God's Sovereignty

The Reformed Doctrine of Predestination by Lorraine Boettner -- Read Online

Willing to Believe by R.C. Sproul

The Word of God

God-Centered Biblical Interpretation by Vern Poythress

Canon Revisted by Michael Kruger

The Church

Worship that Is According to Scripture by Terry Johnson

What is a Healthy Church? by Mark Dever

Handbook of Church Discipline by Jay Adams

A Sacramental Catechism by John Willison -- Read Online

The Family

The Shepherd-Leader at Home by Timothy Z. Witmer

The Family Worship Book by Terry L. Johnson

Economics

Foundations of Economics by Shawn Ritenour

The Law by Frederic Bastiat -- Read Online

Economics in One Lesson by Henry Hazlitt -- Read Online

The Moral Issues of Money by Gabriel M. Mueller -- Read Online

Beyond Democracy by Frank Karsten and Karel Beckman

Apologetics

Every Thought Captive by Richard Pratt (Great Introduction to Apologetics)

Van Til's Apologetic: An Analysis of His Thought by Greg Bahnsen (Advanced)

The Latest Infidelity by R.L. Dabney -- Read Online

Creation and Change by Douglas F. Kelly

The Compact Guide to World's Religions edited by Dean C. Halverson

Culture

Amusing Ourselves to Death by Niel Postman

Postmodern Times by Gene Edward Veith, Jr.

Idols for Destruction by Herbert Schlossberg

History

Foxe's Book of Martyrs -- Read Online

Revival and Revivalism by Ian H. Murray

The Christian Life

The Heidelberg Catechism -- Read Online

Pray with Your Eyes Open by Richard Pratt

Addictions: A Banquet in the Grave by Edward Welch

Of the Mortification of Sin in Believers by John Owen -- Read Online

How to Overcome Evil by Jay Adams