Find a task that is fun! The following list is primarily for inspiration. If you pick one and don't like some aspects, change them. Ask the mentors lots of questions. Of course, you can also just join any of the projects others are working on.

117 Steps[edit]

http://well-typed.com/MuniHac/117Steps.pdf

Very basic introduction to working with Haskell and GHCi.

Curry Club Augsburg exercises (in German)[edit]

https://curry-club-aux.github.io/haskell-workshop/uebung.pdf

Relatively small and self-contained tasks. From very basic to quite challenging.

Utrecht University exercises[edit]

http://foswiki.cs.uu.nl/foswiki/pub/USCS/ComputerLab/AssignAll.pdf

Large document full of assignments and tasks. Some are quite advanced and really large, but some are very basic. Good starting points:

Project 4.1 MasterMind Solution Template Github repo

Project 3.8 Stereograms (slightly more involved) Solution Template

ZuriHac CodeLab[edit]

https://github.com/jaspervdj/haskell-beginners-projects/blob/master/memegen/codelab/memegen_codelab.md

A larger project guiding you to implement a "real" application.