The language tutorial introduces new users to the Elements languages. All these tutorials are platform agnostic, thus work on .NET, Java, Android, iOS and OS X. Each page has a tab selector that can be used to pick the programming language you want to see the tutorial in.
The tutorials are a simple introduction to the parts that make up an Elements program, building up on the earlier tutorials.
Most of the tutorials have sample code in several languages, the "Oxygene", "C#" and "Swift" links on the top right of the sample code can be used change languages: