Gladly there is an online IDE with compiler (https://repl.it/languages/haskell https://repl.it/languages/haskell) so you don't even need to install Haskell loca

Gladly there is an online IDE with compiler (https://repl.it/languages/haskell https://repl.it/languages/haskell) so you don't even need to install Haskell locally (which honestly seemed a bit heavy for a starter's tutorial - "First you need Haskell Platform, then you can start the tutorial")