Bethinking.org

A fantastic apologetics resource, with answers and talks on a whole range of issues - from why God allows suffering to whether science disproves God. It has resources in Introductory, Intermediate and Advanced categories, so should provide some good material regardless of your needs.

Theologynetwork.org

A more theologically focused resource by UCCF, with excellent articles on a range of thelogical topics.

Uncover Resources

A collection of resources for the Uncover studies, including leader's notes, videos and artwork.