I started looking into F# last year and the switch from C# was easier than expected. In my case, I didn't just fire up Visual Studio (Code or Pro) to start fiddling. I started reading. And I thought I would share a list of resources I've appreciated during this journey.
This post will be updated continuously. Feel free to provide tips. Initially it started out as a tweet:
Get programming with F#
I think this is a good "get up to speed book" when you have prior experience to e.g. C#. At least it worked for me.
Domain modelling made functional &
F# for fun and profit
A part from having an excellent site with tons of good F# contents, Scott also has a very good book, which shows how F# can be used to put together expressive domain models with very little code.
Could very well have been the first or second book, but it was my third and I've used it a bit as a refresher and lookup book. Works well.
Concurrency in .NET
This book works both for C# developers and F# developers that want to learn tips and tricks about concurrency in .NET.
Feel free to make me aware of other resources I should look into.