The below is a tiny fraction of what is available online; for more, start at haskell.org.
Cheat Sheet
Editor Plugins
Books
Programming in Haskell by Graham Hutton
Real World Haskell by Bryan O’ Sullivan, John Goerzen, and Don Stewart
The Haskell School of Expression by Paul Hudak
Learn You a Haskell by Miran Lipovača
Tutorials
- Monad Tutorial by Graham Hutton
Fancy Types and Verification
Courses
- Dartmouth Problem Solving with Computer Science
- UPenn Advanced Programming
- Stanford Programming Languages
- Princeton Programming Languages