In August, David Rosen asked about guides to SL. One of my coworkers at Ga. State is actively involved in SL. She recommended these resources:

101 Ways to Use Second Life in the College Classroom
Dr. Megan Conklin at Elon College
http://facstaff.elon.edu/mconklin/pubs/glshandout.pdf

Virtual Worlds: A Second Life Beginners Guide UOC Summer Course
M. Senges, T. Praus, P. Bihr
http://www.thewavingcat.com/wp-content/uploads/2007/06/uoc_virtual_worlds-a_second_life_beginners_guide_v10.pdf