The Learning Haskell guide has been moved to a git repo to enable outside contribution
Find it here: https://github.com/bitemyapp/learnhaskell
@eborden the placement of recursion schemes is intentional. Did you look at the material it links to? It's not mere recursion, it's the formalization of recursion patterns such as those found in the famous Meijer paper.
So, less "write a foldr" and more "that's a zygo preprohistomorphism!"
The foundational material covers basic recursion already.