Write Yourself a Scheme in 48 Hours
by Jonathan Tang
Publisher: Wikibooks 2007
Number of pages: 138
You'll start off with command-line arguments and parsing, and progress to writing a fully-functional Scheme interpreter that implements a good-sized subset of R5RS Scheme. Along the way, you'll learn Haskell's I/O, mutable state, dynamic typing, error handling, and parsing features. By the time you finish, you should be fairly fluent in both Haskell and Scheme.
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by Mihai-Radu Popescu - sthaskell.com
Haskell is a lot more mathematically rigorous than other programming languages. This is a book that will show you around Haskell. If you're not already familiar with programming in another language, you might need to put in extra work.
by Eric Etheridge - HaskellWiki
Haskell has both more flexibility and more control than most languages. For computer science students, Haskell is weird and obtuse. This online tutorial assumes that the reader is familiar with C/C++, Python, Java, or Pascal.
by Miran Lipovaca - LearnYouaHaskell.com
This is an attempt at adding another useful resource for learning Haskell. This tutorial is aimed at people who have experience in imperative programming languages (C, C++, Java, Python) but haven't programmed in a functional language before.
by Simon Marlow
This tutorial will introduce the main programming models available for concurrent and parallel programming in Haskell. The text should serve as an introduction to the fundamental concepts through the use of practical examples.