Concord Road Church of Christ: Evangelism Handbook
Surveys methodology, doctrine, apologetics, and Christian living (HTML, DOC, PDF).
God 101: The Abundant Life
A simple course showing God's key to the abundant life that Jesus promises every person. Several formats are available.
Mercy Street Ministries: Street University
By Richard C. Hobbs, training in street evangelism (PDF).
Power Evangelism
Notes from John Wimber's landmark book.
Street Preacher's Manual
Read Gerald Sutek's guide online free.
Watchword Revivals
Read online classic revivalist authors such as Finney, Nee, Tozer, Spurgeon, and Booth.