[owenm]

I was in a similar position when I started learning F# - I'd say start with F#, but you will likely need to be able to read through some of the C# examples to work out how to do common things that rely on the .NET standard library if you haven't worked with .NET before (for example, if you want to read the contents of a file into memory, it's simple, but the examples on the MS site are in C# here and would need a small amount of translating: https://docs.microsoft.com/en-us/dotnet/standard/io/how-to-r...).