Safe Sitter Essentials with CPR class, 4 to 7:30 p.m., Lewes library, 111 Adams Ave., Lewes. Designed to prepare students in grades 6-8 to be safe when they’re home alone, watching younger siblings or babysitting, students must attend both sessions to earn certificate, second session meets May 13, registration required. To register go to delawarelibraries.libcal.com/event/16642114.