I see 2 problems with this. One: for many people, books will not be the best (or cheapest) resource. How will your metric rank items like websites, college lect

I see 2 problems with this. One: for many people, books will not be the best (or cheapest) resource. How will your metric rank items like websites, college lectures series, things like Khan, and other non-linear content? Two: How specific will you make the "goals"? If an example goal is "To be a doctor"...the route there is immense and incalculable. If you do something like "brain surgeon"...there are many subgoals even to that specific profession. OK, three: i don't think you have the expertise to say that there's one best set of books or learning material. everyone learns differently. That's part of the reason why you found so many books in the first place