The Christian Union runs Christianity Explored courses. The Christianity Explored course is an introduction to Christianity over several weeks featuring a presentation and group discussion. See here for information about the current course.

Two Ways to Live
This takes you through the Christian message in six steps.
http://www.matthiasmedia.com.au/2wtl/

Quest For Joy
Six Biblical Truth:
1. God created us for his glory,
2. Every human should live for God's glory,
3. All of us have failed to glorify God as we should,
4. All of us are subject to God's just condemnation,
5. God sent his only son Jesus to provide eternal life and joy,
6. The benefits purchased by the death of Christ belong to those who repent and trust him.
http://www.desiringgod.org/ResourceLibrary...Quest_for_Joy/

The Greatest Person
This small booklet (available to read online) is a presentation of the life of Christ. It explains what is so amazing about Jesus Christ.
http://www.cmf.org.uk/...id=9

Life
Jesus said "God so loved the world that he gave his only Son, so that everyone who believes in him will not perish but have eternal life" (John 3:16) and "I am the way, the truth, and the life" (John 14:6). Find out about the life Jesus offers to those who repent and believe in him.
http://www.life-online.org/

Bible Gateway
The whole Bible is available online at BibleGateway in several languages.
http://www.biblegateway.com/