How to learn F#

Websites

• The F# Hello World tutorial is a nice and gentle introduction to working with F#.
• The F# for Fun and Profit website has tons of great F# content. From a gentle introduction to the world of F# to more advanced concepts, it's all covered. Bonus: all content is also available as an eBook.
• The Tour of F# page nicely demonstrates many of the core F# language features.
• The F# Foundation is a non-profit organisation which aim is to promote F#. The website has lots of links to great F# content. Perhaps even more interesting is their mentorship program, where you can apply to learn F# from an experienced F# mentor.

Videos

• F# for the Practical Developer is a nice introduction to F#.
• F# - Why you should give an F has Daniel Chambers give a sweet introduction into F#, neatly highlighting most F#'s features.
• In A tour of F#, Phillip Carter gives a great introduction to the F# language.
• Don Syme's F# Bonanza has Don Syme, the designer of F#, give an introduction to the F# language, community, and real-world business users.
• Beginner's Series to F# Learn F# in bite-size chunks with Luis Quintanilla in this 12-part series.
• If you're a C# developer, you might like F# for C# developers by Phil Trelford.
• PluralSight has several great introduction courses. The downside: PluralSight is a paid service, but you can request a free trial.

Books

• Beginning F# 4.0
• Real-World Functional Programming

Misc

• The F# mentorship program offers free mentorship by very proficient F# users.