To learn F# use one of the free online resources or books below.

F# for C#, Java or Python developers

Introduces you to F# and show you ways that F# can help in day-to-day development of mainstream commercial business software.

F# Cheat Sheet

The cheat sheet is a small and concise guide to F# syntax for newcomers to get started with the language. It’s available in HTML and PDF format.

The F# Koans

Learn F# by just filling in the gaps! The F# Koans are a fun set of code snippets where you have to fill in gaps to get tests to pass, and you learn the language along the way. Also available as a snippet which can be loaded into interactive environments or your editor of choice.

F# Snippets

A collection of snippets of F# code.

.NET Fiddle

Allows you to try F# code in your browser. You an also view generated IL, and load some NuGet packages (not all packages load correctly in .NET Fiddle).

F# Guide and Visual F# Development Portal

The Microsoft documentation for F# provides a language reference, walkthroughs, videos, samples, and more. You can also contribute to the documentation on GitHub.

F# Programming Wikibook

The wikibook contains a comprehensive guide to F# programming. It covers F# language basics and essential functional programming concepts such as working with functions and immutable data structures. It also discusses imperative and object-oriented programming in F# and advanced langauge features such as active patterns and computation expressions.

Analyzing and Visualizing Data with F#

Tomas Petricek

This report explains many of the key features of the F# language that make it a great tool for data science and machine learning. Real world examples take you through the entire data science workflow with F#, from data access and analysis to presenting the results. You’ll learn about F# Data and type providers, the process of data analysis with Deedle and R type provider and the implementation of basic machine learning algorithm with F#.

F# Workshop Materials

Material from the F# Introduction Workshop created by Jorge Fioranelli.

Community for F# Coding Dojos

A range of coding dojos for F# from Community for F# including the famous Digits Recognizer, Fractal Forest, Canopy 2048, Markov Bot, Type Provider Treasure Hunt, Classics Mash-up and Ham or Spam dojos.

F# Developer Network (FSDN)

Site which allows interactive searches by an F# API. The F# API Search library document describes the search formats, which support the standard signature of F# with some extentions.
Source code available on GitHub FSDN

F# Courses - General

Introduction to F#

FSharpTV is a crowdfunded company that produces F# courses with practical, real-world examples. The introductory course is free and accessible to everyone, including beginners.

F# Books - General

Building Web, Cloud, and Mobile Solutions with F#

Daniel Mohl

Learn how to build key aspects of web, cloud, and mobile solutions by combining F# with various .NET and open source technologies. With helpful examples, this hands-on book shows you how to tackle concurrency, asynchrony, and other server-side challenges. You’ll quickly learn how to be productive with F#, whether you want to integrate the language into your existing web application or use it to create the next Twitter.

Beginning F# 4.0

Robert Pickering, Kit Eason

This book is a great foundation for exploring functional-first programming and its role in the future of application development. The best-selling introduction to F#, now thoroughly updated to version 4.0, will help you learn the language and explore its new features.

Programming F# 3.0

Chris Smith

Why learn F#? This multi-paradigm language not only offers you an enormous productivity boost through functional programming, it also lets you develop applications using your existing object-oriented and imperative programming skills. With Programming F#, you’ll quickly discover the many advantages of Microsoft’s new language, which includes access to all the great tools and libraries of the .NET platform.

F# For C# Developers

Tao Liu

People often ask, “What can F# do that C# cannot?” In this book, you will discover much of what F# can do! You will see familiar things such as object programming and design patterns. Further, you will also see powerful new things like pattern matching, piping, first-class events, object expressions, options, tuples, records, discriminated unions, active patterns, agents, computation expressions and, perhaps most distinctively, type providers.

Expert F# 4.0

Don Syme, Adam Granicz, Antonio Cisternino

Expert F# 3.0 is about practical programming in a beautiful language that puts the power and elegance of data-rich functional programming into the hands of professional developers. In combination with .NET, F# achieves unrivaled levels of programmer productivity and program clarity.

The world’s experts in F# show you how to program in F# the way they do!

Real World Functional Programming

Tomas Petricek with Jon Skeet

Real World Functional Programming is a unique tutorial that explores the functional programming model through the F# and C# languages. The clearly presented ideas and examples teach readers how functional programming differs from other approaches. It explains how ideas look in F#-a functional language-as well as how they can be successfully used to solve programming problems in C#.

Functional Programming Using F#

Michael R. Hansen, Hans Rischel

This comprehensive introduction to the principles of functional programming using F# shows how to apply basic theoretical concepts to produce succinct and elegant programs. It demonstrates the role of functional programming in a wide spectrum of applications including databases and systems. Coverage also includes advanced features in the .NET library, the imperative features of F# and topics such as text processing, sequences, computation expressions and asynchronous computation. With a broad spectrum of examples and exercises, the book is perfect for courses in functional programming and for self-study. Enhancing its use as a text is an accompanying website with downloadable programs, lecture slides, a mini-projects and links to further F# sources.

F# for Scientists

Jon Harrop

F# for Scientists explains and demonstrates the powerful features of this important new programming language. The book assumes no prior experience and guides the reader from the basics of computer programming to the implementation of state-of-the-art algorithms. Written in a clear and concise style, F# for Scientists is well suited for researchers, scientists. It also serves as an ideal supplemental text for advanced undergraduate and graduate students with a background in science or engineering.

F# for Quantitative Finance

Johan Astborg

This book will cover everything you need to know about using functional programming for quantitative finance. Using a functional programming language will enable you to concentrate more on the problem itself rather than implementation details. Tutorials and snippets are summarized into an automated trading system throughout the book.

The Book of F#

Dave Fancher

The Book of F# aims to introduce intermediate and experienced developers to functional-first programming with F#. Throughout the book, you’ll learn how this robust language can help you focus on creating correct solutions by introducing a variety of important concepts including currying, partial application, pattern matching, units of measure, asynchronous workflows, query expressions, type providers, and computation expressions. Furthermore, you’ll discover how F#’s rich object-oriented capabilities allow it to naturally fit into existing applications.

Programming Language Concepts

Peter Sestoft

The book Programming Language Concepts (PLC) provides an introduction to programming language concepts and implementation technology, such as interpretation, compilation, type checking and type inference, abstract machines, and garbage collection. F# is used as a meta language throughout the book expressing all concepts and examples of programming language design in a modern strongly-typed language of the ML-family, enabling the reader to experiment with the ideas right away.

F# Deep Dives

Tomas Petricek and Phillip Trelford

F# Deep Dives presents a collection of real-world F# techniques, each written by expert practitioners. Each chapter presents a new use case where you’ll read how the author used F# to solve a complex problem more effectively than would have been possible using a traditional approach. You’ll not only see how a specific solution works in a specific domain, you’ll also learn how F# developers approach problems, what concepts they use to solve them, and how they integrate F# into existing systems and environments.

Machine Learning Projects for .NET Developers

Mathias Brandewinder

Machine Learning Projects for .NET Developers shows you how to build smarter .NET applications that learn from data, using simple algorithms and techniques that can be applied to a wide range of real-world problems.

Mastering .NET Machine Learning

Jamie Dixon

This book is packed with real-world examples to easily use machine learning techniques in your business applications. You will begin with introduction to F# and prepare yourselves for machine learning using .NET framework. You will be writing a simple linear regression model using an example which predicts sales of a product. Forming a base with the regression model, you will start using machine learning libraries available in .NET framework such as Math.NET, Numl.NET and Accord.NET with the help of a sample application. You will then move on to writing multiple linear regressions and logistic regressions.

Multi-Paradigm Programming Using F# and .NET

Ali Baghernejad

F# is the result of combining the power and capabilities of functional programming with with the imperative and object-oriented paradigms of .NET. Multi-Paradigm Programming In F# is a book that help developers to make
applications using F# tools and the .NET libraries. This book is written in Persian language in 509 pages. In this book you will read:

F# Applied

Tamizhvendan S

“F# Applied” is an excellent introduction to applied, modern programming for the web. Starting with Suave, the F# server-side web framework, this book will teach you how to create complete applications using Functional-First Programming with F# In this book you will read:

Learn F#

Isaac Abraham

Learn F# is a practical guide for experienced C# and .NET developers that teaches the F# language, tools, techniques, and practices that can be applied in common scenarios. You’ll start with F# language basics and best development practices. You’ll also learn the core set of FP techniques in F#, and why to use them. Then you’ll discover how to write idiomatic F# code on the .NET framework in Visual Studio, and what tools to use to give you the best experience within VS. The second part of the book shows you how to apply F# in larger, real world scenarios, including features such as: -

By the end of the book, you’ll be able to use F# in your day-to-day development, and know how and where to deepen your knowledge.

F# 4.0 Design Patterns

Gene Belitski

This book will encourage enterprise developers coming to F# from other platforms to cultivate an idiomatic F# coding skillset by fully embracing the functional-first F# paradigm.

In this book you will:

F# Books (Coming Soon)

Understanding Functional Programming

Scott Wlaschin

A practical approach with examples in F#. Are you an experienced C#, Java or Python developer? Do you want to understand what all the fuss about functional programming is about? Designed for beginners, this book will explain all the core concepts of functional programming in a practical way with no maths or jargon.