download:
http://www.scala-lang.org/


odersky book:
http://www.cs.ucsb.edu/~benh/162/Programming-in-Scala.pdf

code examples from Odersky book:
https://www.cs.helsinki.fi/u/wikla/OTS/Sisalto/examples/

consise summary:
http://www.cis.upenn.edu/~matuszek/Concise%20Guides/Concise%20Scala.html



video course:
https://www.coursera.org/course/progfun

tutorial (but see Odersky book):
http://www.tutorialspoint.com/scala/scala_tutorial.pdf

run code:
http://www.simplyscala.com/