jhook, here's a book game our family plays (usually takes an entire summer break).
Pick one topic that really interests you, and get a book on that topic; read the entire book. Pick one topic (event, person, etc.) from that book, then get a a book on that particular separate subject. Out of that book get the most interesting topic and get another book on the new topic... and so on & so on.
Usually the kids & I write down our book paths; which, now that I think of it, is pretty nerdy. Oh well; it's a real hoot... fun to see the topic evolution.