The Big Learning Scala List

• The official Scala site, start at the Learning Scala trail or take a tour of Scala.
• ScalaCourses.com online self-study and instructor-led training for Scala and Play Framework.
• First steps to Scala by Bill Venners, Martin Odersky, and Lex Spoon.
• The famous "staircase" Scala book. Some sample chapters are available in PDF format.
• The O'Reilly Scala book, by Dean Wampler and Alex Payne. The entire contents are online !
• An alternative online tour of Scala
• Try out Scala programming in your web browser.
• Typesafe/Akka, the first offical enterprise stack offered by the creator's of Scala.
• Lift, a web application framework for Scala.
• Parsing XML with Scala

If you want to talk with your fellow Scala programmers, you can join the Scala IRC channel: irc://irc.freenode.net/scala
For any of you Dutch-speaking Scala enthusiasts out there, there is also a Dutch Scala user group.