Columbia University Information Technology provides computer labs and print stations in multiple locations across campus, including in some of the residence halls.
CUIT maintains computer labs of varying sizes, some with on-staff lab consultants to assist you and troubleshoot problems onsite, and some that are self-service. Most include Windows machines, although there are a number with a mix of Mac and WIndows, and Mac-only labs available.
Visit CUIT's Computer Lab Locations and Hours page for more details. The page provides information about how to report issues you experience at a lab, and this information is usually available in the labs themselves as well if you run into problems.
CUIT also manages the University's public printing system, called PawPrint. PawPrint stations are located in the libraries, most academic buildings, and a number of residence halls.