There are Follow Me printers all around campus, including one in the library near the information desk. You can refer to this technology solutions page and follow the steps there for help with Follow Me Printing generally.
To print from a library computer, just log on to the computer and click the Follow Me Printing icon to install the printers on the desktop.
Once Follow Me Printing has been installed, you can print anything you'd like and select Follow Me Printing as the printer destination. Then, just follow the steps in the link above to release your print job.