As far as what I have learned and how I have been studying, I did try "Learn You a Haskell" but found its explanations inadequate and sometimes confusing. Searching the web, I find a number of people feeling the same. Meanwhile, I find a large number of people agreeing with your experience the text is the best introduction. I think the fact the supposed best text is utterly failing a sizable number of people also suggests how worthwhile Haskell might be.