Haskell Programming by Christopher Allen
The PDF covers the following topics related to Haskell Programming : All You Need is Lambda, Hello, Haskell!, Strings, Basic datatypes, Types, Typeclasses, More functional patterns, Recursion, Lists, Folding lists, Algebraic datatypes, Signaling adversity, Testing, Monoid, Semigroup, Functor, Applicative, Monad, Applying structure, Foldable, Traversable, Reader, State, Parser combinators, Composing types, Monad transformers, Non-strictness, Basic libraries, IO.
Author(s): Christopher Allen, Julie Moronuki
1076 Pages 
This note explains The concurrent package, The data package, The lang package, The net package, The num package, The posix package, The text package, The util package, and the Win32 package.
Author(s): The GHC Team
49 Pages
A Gentle Introduction to Haskell 98 Yale
The PDF covers the following topics related to Haskell Programming : Introduction, Values, Types, and Other Goodies, Functions, Case Expressions and Pattern Matching, Type Classes and Overloading, Types, Again, Input/Output, Standard Haskell Classes, About Monads, Numbers, Modules, Arrays.
Author(s): Paul Hudak, John Peterson, Joseph Fasel, Department of Computer Science, Yale University, University of California
64 Pages
