Note: here I talk about dotnet core and not full framework! For full framework there are plenty of docs on this, but this is dotnet core.
I have an F# libra
So currently what I described above is all the support you have in Visual Studio 2015 with the preview tooling. Visual Studio 15 will be hopefully better, but the current Preview (Preview 5) does not have .NET Core support at all.
What is worth trying out is Visual Studio Code. In F# you get intellisense for type which are defined in C#. So for F#-C# interopability currently VS Code has much better support than the full VS.