It really was a great read.
https://www.amazon.com/This-Will-Make-You-Smarter/dp/0062109391
I've read that book several times and it's excellent, much of my brain is running principles defined there. Buy it twice, one for yourself and one for the cousin as well. It's in my top 15 favorite books.
If you enjoy it and are sad once you read it all and there isn't any more, get this one which is equally mind blowing: https://www.amazon.com/This-Will-Make-You-Smarter/dp/0062109391
Other ideas for books everyone in the world needs to read:
Read this 5 times: http://www.amazon.com/This-Will-Make-You-Smarter/dp/0062109391