YSK: Many public libraries offer FREE technology learning sessions that teach the elderly and otherwise tech-illiterate how to use email, browse the internet, and use a smartphone and/or tablet.
from /r/YouShouldKnow
YSK：許多公共圖書館提供免費的技術學習課程，教老年人和其他技術盲如何使用電子郵件，瀏覽互聯網，以及使用智能手機和/或平板電腦。