Several people responded that they weren't really sure how to get
started with Google Groups.
I have created a short (about 10 minute) tour of our Environmental
Science Google Groups with basic instructions on how to add or modify
existing information.
The video is on a Help Blog for the group I have started at
http://eso-googlegroup-help.blogspot.com/
Please check it out and let me know if it helps.
Thanks,
David