This is my own “re-telling” of the tour of Scala from the official Scala website. If you are WhyAnotherTour, feel free, but mostly it was fun and informative. I hope you feel the same way.

You should be able to go through these in the order listed, with each building on previous topics. I’ve also linked to the original tour topics.

Basics

1. ScalaBasics – this covers some syntactic things that might surprise you, as well as some very basic things about working with Scala (not in the tour)
2. UnifiedTypes
3. ScalaClasses
4. ScalaProperties – not in the official tour
5. ScalaPackages
6. ScalaTraits
7. ScalaGenerics
8. ScalaAnnotations
9. ScalaOperators

Intermediate

1. ScalaFunctions
2. PatternMatching
3. FunctionCurrying – define a function that has received some of its parameters now, and will get the remainder later.
4. CaseClasses – taking switch statements to a useful level.
5. SealedClasses – tightening up CaseClasses.
6. XmlLiterals
7. ForComprehensions – don’t let the name confuse you; this is about Scala’s powerful for loop construct
8. TypeBounds
9. InnerClasses – you only thought they were basic.
10. ImplicitConversions
11. TypeDependentClosures – Closures in general discussed here, too.

Advanced

1. ImplicitParameters
2. TypeVariance
3. AbstractTypes – not abstract classes
4. ExplcitlyTypedSelfReferences

Not Covered

There’s a few things that aren’t really covered by the tour (other than some basics, that are, at first glance, key to understanding what Scala can do for you.

1. ScalaObject
2. ActorsAndConcurrency
3. JavaIntegration
4. DuckTyping