The first book on money I read was the classic Rich Dad, Poor Dad by Robert Kiyosaki. There is some controversy surrounding Robert Kiyosaki, but that does not change the fact that this book radically changed the way I looked at money. For this reason, I think it the perfect book to start with.
I was raised to see money as something you worked hard for. My parents always struggled financially, but they worked hard and were able to send me to one of the best private schools in my city. I believe that seeing my parents struggle financially, whilst at the same time attending a school with a lot of wealthy kids, was what gave me my interest in money and finance (I have a Commerce degree and currently work in Business Banking).