Below is a link to a web-site by Christianity Explored. I have been extremely impressed by resources they have put out in the past related to personal evangelism. They have just revamped their website and it is very 'seeker' friendly related to helping those without Christ understand more about Christianity and what followers of Christ believe and such.
Here's the link: http://www.christianityexplored.org/
Use it for yourself and reference it to those whom you know and love who are searching for answers related to the things of Christ.