Moodle is an Online Learning Environment (like an online classroom) that allows teacher to post assignments and resources, collect work from students, run class discussion forums and wikis, and collaborate on class projects. Moodle is available on the internet at http://moodle.ccs.k12.va.us
Below are some links and handouts that may help you get started on Moodle.
http://mrdaly.com/blog/2011/08/enrolling-students-and-guests-in-your-moodle-course/