Scala School の抄訳と原文で説明があまりない点を少し補足しています。
http://twitter.github.com/scala_school/index.html
Scala School 意訳(Basics)
Scala School 意訳(Basics continued)
Scala School 意訳(Collections)
Scala School 意訳(Pattern matching & functional composition)
Scala School 意訳(Type & polymorphism basics)
Scala School 意訳(Advanced types)
Scala School 意訳(More collections)
Scala School 意訳(Testing with specs)
Scala School 意訳(Concurrency in Scala)
Scala School 意訳(Java + Scala)