I tend to focus on core concepts quite a bit more than actual examples, so that the fundamental understanding of what the examples are trying to teach me is building on skills I already have just haven't figured out how to use yet.
tl;dr Your mileage may vary. I learn kind of counterintuitively for others.
Since this seemed to be popular, I decided to make a repository for content about haskell topics that you can find here new materials for lens will be put here