The Rock County Public Library is sponsoring another Lunch & Learn class, “Tips for Using Facebook and Other Social Networking Sites” on Thursday, March 22, 2012 from 12 noon to 1:00 p.m. Facebook and other social networking sites can open your world. See demonstrations of some of the best and learn how to protect your privacy when using them. The instructor will be Mary Gurney. There is a $5 cover charge for lunch and class. Pre-registration is required by 5:00 p.m. on Tuesday, March 20th. Call 402-684-3800 or e-mail rockcolib@abbnebraska.com.