What’s two-factor authentication, anyway? What can I do to keep my accounts secure online? Do I really have to start paying for Twitter now?

Get answers to these questions and more with a free tech class at the Mercer Library on Tuesday, March 21 at 11:00 a.m. Librarian Teresa Schmidt will answer your questions about online security in a free, informal class open to everyone.

For more information, call the Mercer Library at 715-476-2366 or visit mercerpubliclibrary.org.