This is for self-help materials, rather than professional help resources.

http://www.get.gg/ is a really good website of self-help resources.

In particular:

Free printable worksheets http://www.get.gg/freedownloads2.htm
Free printable leaflets http://www.get.gg/freedownloads.htm

Safety plan - Coping with suicidal thoughts http://www.get.gg/docs/SafetyPlan.pdf

CBT Self-help course booklet http://www.get.gg/docs/SelfHelpCourse.pdf

Also, Living Life to the Full is a free online CBT course at http://llttf.com/