Cobb’s Central Library staff will hold a presentation from 5-6 p.m. Tuesday on how ReferenceUSA can be used as a job searching tool. The online database provides information on more than 14 million potential employers nationwide. The presentation will include tips on researching careers, gathering information for a job search, networking, application and resume writing and negotiating salary and benefits. Location: 266 Roswell St., Marietta. Information: 770-528-2369.