There's probably considerable overlap with books on creativity and making your thinking more flexible. Roger von Oech's _A Whack on the Side of the Head_ and _

There's probably considerable overlap with books on creativity and making your thinking more flexible. Roger von Oech's _A Whack on the Side of the Head_ and _ Surely You're Joking, Mr. Feynman!_ may be helpful. Also, look at some of the books about home schooling, targeted to both parents and the teenagers themselves. I remember Grace Lewellyn's _ The Teenage Liberation Handbook_ having sections along the line of, "How do I go about really learning history/math/foreign languages/etc." Many things with meta-learning advice will have it as a secondary topic, albeit an important one. Try your public library -- this is an excellent question for a librarian.