The Northborough Free Library is hosting a summer reading program for elementary school students, with registration beginning online Friday. The program allows children to track their reading and participate in various fun and educational programs — complete with prizes and surprises — throughout the summer. The library is also seeking volunteers to assist with the program. Students entering grades 6 through 12 are encouraged to pick up a volunteer application at the library, 34 Main St., to help out. Training sessions for volunteers are being held this week, so any interested students should sign up as soon as possible. To learn more about the program or to register, visit www.northboroughlibrary.org.