- Try Haskell in your browser (slow, bare-bones)
- This site's guide to Installing Haskell
- This site's entry-level explanation of the differences between Scheme, OCaml, and Haskell
- More detailed comparisons of OCaml and Haskell here; and then more details about how to do some OCaml-ish and Haskell-ish things in Scheme, and how to get Scheme-ish continuations in OCaml, here
- Learn Haskell in 10 minutes
- A brief introduction to Haskell
- What is Haskell? and Why Haskell matters
- Quick Reference | Cheat Sheet
- Tour of the Haskell Syntax
- Walla Walla Overview (18 pp.)
- Wikipedia on Haskell and GHC
- Haskell Wiki, with a link to download the Haskell Platform
- New Haskell Wiki
- Haskell FAQ
Tutorials
- Lecture notes from a good Intro to Haskell course at Penn
- The Haskell Wikibook
- Learn You a Haskell for Great Good (400 pp. illustrated and highly-praised text from 2011)
- Yet Another Haskell Tutorial (YAHT, also as 192 pp. pdf)
More tutorials, mostly aimed at existing programmers
- A Not-So-Gentle Introduction to Haskell (64 pp. tutorial from 2000, expects some prior knowledge of functional programming)
- Haskell Tutorial for C Programmers (45 pp.)
- How to read Haskell
- Hitchhiker's guide to Haskell (33 pp.)
- Write Yourself a Scheme in 48 Hours
- Comprehensive List at Haskell Wiki
Other
- Lambda Lessons, experiment with evaluating
mapandfoldstep-by-step - A Tour of the Haskell Prelude
- Haskell for OCaml Programmers
- ML Dialects and Haskell
- Differences between Haskell and SML?
Advanced Docs, listed here for reference
- GHC User's Guide from Haskell Platform | latest, including Using GHCi and Extensions
- Libraries from Haskell Platform | Haskell 2010 (Prelude)
- GHC releases and other docs, including GHCi and GHC FAQ
- Formal language specs: Haskell 98 | Haskell 2010 | Haskell′
- Cabal package manager: User Guide | tool usage | installing packages | cabal-setup | help FAQ1 FAQ2 | writing programs
- Hackage package repository
- Haddock documentation generator: User Guide from Haskell Platform | latest | FAQ
- What I Wish I Knew When Learning Haskell (300 pp. website)
- Haskell idioms
- Haskell Wiki Glossary
- Reddit's r/haskell
- Stack Overflow questions tagged "haskell"
- Real World Haskell (714 pp. text from 2008, expects you've already mastered the fundamentals of Haskell)
- GHC Developer Wiki