NIST Special Publication 800 – 50 is the National Institute of Standards and Technology’s guide on Building an Information Technology Security Awareness and Training Program.
It can be found here http://csrc.nist.gov/publications/nistpubs/800-50/NIST-SP800-50.pdf
4.1.1 of this document is great for some ideas on topics.
5.2 has some good techniques for delivering material.