The Langley-Adams Library teen summer reading program will begin Monday for grades 6 through 12. The program will run online through the library website, langleyadamslib.org. For each book read, participants will be entered into a raffle for a chance to win a prize awarded the week of Aug. 6. Participants who read at least three books will receive a free pass to Water Country, the Portmouth, N.H. waterpark. The library also has some teen events planned for the summer, including monthly book clubs and programs on swordsmanship and cooking. Online registration is required for all teen library programs.