24/7 Chat with a librarian 24/7 on our live chat site. Connect with Lehman Librarians online:
Monday-Thursday: 9 a.m. - 8 p.m.
Friday: 9 a.m. - 5 p.m.
Saturday and Sundays: 12 p.m. - 5 p.m.
If you miss us during these times, other librarians are available to chat 24/7.
E-mail us We generally respond to questions within 48 hours when the Library is open.
Drop-In Reference on Zoom Librarians are available for drop-in reference on Zoom on Tuesdays and Wednesdays from 2-5pm.
Make a research consultation appointment: Request an appointment with a librarian to help you with in-depth research questions.
Department Program requirements
Don't know where to begin? Try the links below first. Use the tabs above to find more great computer science resources.