Books

There are a number of excellent resources to help you get started with CoffeeScript, some of which are freely available online.

The Little Book on CoffeeScript is a brief 5-chapter introduction to CoffeeScript, written with great clarity and precision by Alex MacCaw.
Smooth CoffeeScript is a reimagination of the excellent book Eloquent JavaScript, as if it had been written in CoffeeScript instead. Covers language features as well as the functional and object oriented programming styles. By E. Hoigaard.
CoffeeScript: Accelerated JavaScript Development is Trevor Burnham’s thorough introduction to the language. By the end of the book, you’ll have built a fast-paced multiplayer word game, writing both the client-side and Node.js portions in CoffeeScript.
CoffeeScript Programming with jQuery, Rails, and Node.js is a new book by Michael Erasmus that covers CoffeeScript with an eye towards real-world usage both in the browser (jQuery) and on the server-side (Rails, Node).
CoffeeScript Ristretto is a deep dive into CoffeeScript’s semantics from simple functions up through closures, higher-order functions, objects, classes, combinators, and decorators. By Reg Braithwaite.
Testing with CoffeeScript is a succinct and freely downloadable guide to building testable applications with CoffeeScript and Jasmine.
CoffeeScript Application Development from Packt, introduces CoffeeScript while walking through the process of building a demonstration web application. A CoffeeScript Application Development Coookbook with over 90 “recipes” is also available.
CoffeeScript in Action from Manning Publications, covers CoffeeScript syntax, composition techniques and application development.
CoffeeScript: Die Alternative zu JavaScript from dpunkt.verlag, is the first CoffeeScript book in Deutsch.