by Leo Rosten
The New Joys of Yiddish is a terrific reference and a really fun book to sit down and read. It's filled with folklore, jokes, stories and comics as well as really useful pronounciation guidelines. I don't think I would ever try to use the words here but it helps me understand Jewish literature a lit...
A wonderful book; I've decided that Yiddish is the language of humor and insults, and Rosten's witty prose style makes this book read more like entertainment than reference.