YSK you can teach yourself how to repair car parts, even engines and transmissions, without going to school or taking apart your own car - by buying old manuals off of auction sites.
from /r/YouShouldKnow
YSK你可以教自己如何修理汽車零件，甚至是發動機和變速箱，而不用去學校或拆開自己的車--通過在拍賣網站上購買舊手冊。