From the Bible:

The Parable of Sower – Matthew 13.1-23, (also in Mark 4.1-20, Luke 8.1-15)
The Paraple of the Two Sons – Matthew 21.28-32
The Great Commision – Matthew 28.18-20
Jesus’ Discussion with Nicodemus – John 3.1-21
The Goal of Our Faith – 1 Peter 1.8-9
Jesus Decides Who Comes into Heaven – John 5.21, Matthew 13.24-30, 36-43

Online:

More information about salvation and who Jesus is:

www.powertochange.com
www.thelife.com
www.whoisjesus-really.com
guidance.gospelcom.net/answer.htm

Answers common questions people ask about Christianity:

www.billygraham.org/SpiritualHelp_Index.asp
www.greatcom.org/resources/toughquestions