I just happened upon some of the outstanding work of Mark Arnold this morning which I hadn't seen before. He is at Mount Desert High School . . . which is, it so happens, yet another Maine school that is making wonderful use of Google Apps.
First of all, you really need to check out this site called Teaching & Learning Guides. What a straight-forward template for organizing content and resources!
Next, check out Mark's Trojan TechNotes for very helpful advice and resources.
Google Sites 101
Google Apps for Educators
Why Google Apps for Schools
TV & Radio to Educational Resources
Learning Tools Exposition
Evaluating Web Resources and Wikipedia Articles
Videoconferencing Systems and Idea Bank