WebMD
Web Md: Lice
This article from WebMD provides a great, brief overview of lice, focusing on the three main kinds. Head lice, pubic lice and body lice, each of which come with a picture. Topics that are also covered include cause, symptoms, what...
Other
Frequently Asked Questions About Head Lice
This HeadLice.org site has several links to FAQ's about head lice and also its treatment.