The Coursera Functional Programming Principles in Scala[0] course is definitely worth the time. Coming from being a Java programmer in my day job, it's made my Scala I've written since a lot cleaner, in my opinion. It's also had the side effect of making Java a bit more unbearable. It's definitely not to be approached as a beginner to programming though.

[0] - https://www.coursera.org/course/progfun