How can I rid myself of the desire to look at beardless youths, and what books and lectures help with that, especially since this affliction is widespread among young people?

The questioner can refer to fatwas numbered: 31928, 33482, 39217. It is obligatory to think well of Muslim youth, in accordance with the Almighty's saying: "O you who have believed, avoid much [negative] assumption. Indeed, some assumption is sin." One can also read the chapter on Punishments (Hudood) from Fiqh As-Sunnah (Volume Two, page 417) regarding sodomy, and consult Islamic libraries and recordings to obtain suitable books and tapes, while being mindful of Allah and striving for His pleasure.