List some common neurotransmitters and describe their effect on behavior
The first two sites have a list of neurotransmitters and the effects. The other sites explain effects in detail.
http://web.indstate.edu/thcme/mwking/nerves.html
http://www.benbest.com/science/anatmind/anatmd10.html
http://www.crossroadsinstitute.org/neurotransmit.html
http://www.answers.com/topic/neurotransmitter
http://www.science.org.au/nova/040/040box04.htm
http://www.faqs.org/nutrition/Met-Obe/Mood-Food-Relationships.html