First place to start is probably Yesod’s web site at: https://www.yesodweb.com/

Often recommended environment for developing Haskell programs is Stack: https://docs.haskellstack.org/en/stable/README/

My road to Haskell started with Learn You a Haskell for Great Good: http://learnyouahaskell.com/ and going through lecture notes of CIS 194: http://www.seas.upenn.edu/%7Ecis194/spring13/lectures.html