Ellen Brigham and I put together this one-page overview of the elive toolbar for students/non-moderators.
Here are participant quick reference guides provided by Elluminate Live! (They have lots of great resources available on their training page: http://www.elluminate.com/Services/Training/?id=70/)
I added a guide for Elive version 9.6 (which UAA is currently using) and Elive 10 (which UAA will be upgrading to soon).
You can also include this link in Blackboard to give your students an elive orientation: http://www.elluminate.com/resources/orientation/v10/index.php