The Northborough Free Library is now offering a new way of learning languages through the Mango online language learning system. Now available to library patrons through its website, northboroughlibrary.org, Mango Languages offers 40 different foreign language courses and 16 English as a Second Language courses. Those interested in learning more about the program can visit the Reference Desk for a preview, or attend a more in-depth tutorial on Saturday at 10 a.m. Call 508-393-5025, ext. 5, or e-mail email@example.com to register for the free event.