The number of books published about Scala is now large, and still growing fast.

What follows is only a small selection of recent titles in English that address the Scala language in general. Many more books exist which address particular audiences, particular frameworks, etc.

Programming in Scala, 3rd ed. – Updated for Scala 2.12 by Martin Odersky, Lex Spoon, and Bill Venners - first edition available for free online reading

Being co-written by the language's designer, Martin Odersky, you will find it provides additional depth and clarity to the diverse features of the language. The book provides both an authoritative reference for Scala and a systematic tutorial covering all the features in the language. Once you are familiar with the basics of Scala you will appreciate having this source of invaluable examples and precise explanations of Scala on hand. The book is available from Artima. Award winning book - Jolt Productivity award for Technical Books

Scala for the Impatient – Available Now by Cay S. Horstmann

Published by Addison-Wesley:

What you get:
  • A rapid introduction to Scala for programmers who are competent in Java, C#, or C++
  • Blog-length chunks of information that you can digest quickly
  • An organization that you'll find useful as a quick reference
What you don't get:
  • An introduction into programming or object-oriented design
  • Religion about the superiority of one paradigm or another
  • Cute or academic examples
  • Mind-numbing details about syntax minutiae

Scala in Action – Available Now by Nilanjan Raychaudhuri

Published by Manning:

"Scala in Action is a comprehensive tutorial that introduces Scala through clear explanations and numerous hands-on examples. Because Scala is a rich and deep language, it can be daunting to absorb all the new concepts at once. This book takes a "how-to" approach, explaining language concepts as you explore familiar programming challenges that you face in your day-to-day work. You won't just get the theory of functional programming. Instead, you'll learn to do concurrent programming using Scala's Actors and Akka libraries. You won't just discuss integration strategies, you'll learn to effectively mix Scala and Spring. You won't just talk about ways to simplify programming, you'll learn to build DSLs and other productivity tools."

Programming Scala – Updated for Scala 2.11 by Alex Payne and Dean Wampler

Published by O’Reilly:

Both are industry experts, Alex Payne being the lead API programmer at Twitter, a social networking service based on Scala. O’Reilly, the publisher, writes: "Learn how to be more productive with Scala, a new multi-paradigm language for the Java Virtual Machine (JVM) that integrates features of both object-oriented and functional programming. With this book, you'll discover why Scala is ideal for highly scalable, component-based applications that support concurrency and distribution. You'll also learn how to leverage the wealth of Java class libraries to meet the practical needs of enterprise and Internet projects more easily."

Functional Programming in Scala – Available now by Paul Chiusano and Rúnar Bjarnason

Published by Manning:

"Functional programming (FP) is a style of software development emphasizing functions that don't depend on program state... Functional Programming in Scala is a serious tutorial for programmers looking to learn FP and apply it to the everyday business of coding. The book guides readers from basic techniques to advanced topics in a logical, concise, and clear progression. In it, you'll find concrete examples and exercises that open up the world of functional programming."

Scala in Depth – Available Now by Joshua D. Suereth

Published by Manning:

"While information about the Scala language is abundant, skilled practitioners, great examples, and insight into the best practices of the community are harder to find. Scala in Depth bridges that gap, preparing you to adopt Scala successfully for real world projects. Scala in Depth is a unique new book designed to help you integrate Scala effectively into your development process. By presenting the emerging best practices and designs from the Scala community, it guides you though dozens of powerful techniques example by example. There's no heavy-handed theory here-just lots of crisp, practical guides for coding in Scala."

Scala Puzzlers – Available Now by Andrew Phillips and Nermin Šerifović

Published by Artima Press:

"Getting code to do what we want it to do is perhaps the essence of our purpose as developers. So there are few things more intriguing or important than code that we think we understand, but that behaves rather contrary to our expectations. Scala Puzzlers is a collection of such examples in Scala. It is not only an entertaining and instructive way of understanding this highly expressive language better. It will also help you recognize many counter-intuitive traps and pitfalls and prevent them from inflicting further production bug hunt stress on Scala developers."