Where to start?

The Tango is completely moved by functional programming, its concepts and implementations. If you are not so familiarized with those concepts is strongly recommended you reinforce it, at this way you'll enjoy 100% of the Tango potential.

Some of those concepts can be found at section: Concepts.

Having said that, you can already start working with Tango in your C# application.

To do this, you can install via NuGet (fortemente recomendado) or if you want to, manually.