Excellent set of lectures from RWTH Aachen University on Functional Programming in Haskell. Unfortunately, the lecture notes are in German, so I have been slowly trying to translate them into English for me (and for anyone else) to study from them.
ismaildawoodjee/functional-programming-haskell
Functional Programming with Haskell lecture notes, translating from German to English (WIP)
HaskellMIT