Welcome nice stranger!
Haskell Mode loves contributors and we strive to go extra length to help out both newcomers and serial contributors.
Haskell Mode project is managed according to rules outlined in the wiki:
https://github.com/haskell/haskell-mode/wiki/Contributing
When I started contributing to haskell-mode I had 0 experience in Elisp, but it was super easy to learn it. -- geraldus, 2016-01-16