I just finished Sacred Economics by Charles Eisenstein and I feel like I've been recommending it (and emailing the .mobi file) to everyone I talk to. It was really eye-opening for me to think about the basis for money, and how the design of our currency system, in itself, could be such an important factor in why our society has such a conflict between what is good and what is profitable. Eisenstein argues very persuasively for exploring alternate currencies and systems of exchange that do not incentivize hoarding of capital in the same way that our existing fiat monetary systems do. Just read this book. I'd love to talk with you about it.
The book is available for purchase here. It can be downloaded for free, and then you can make a contribution to Eisenstein once you have read it based on how helpful/interesting/good you find the book. Eisenstein encourages sharing of the book, seeing the book as a gift, and your contribution as a return gift.
One note: I did find Eisenstein's style to be a bit overwritten, and it took some getting used to. It takes him about 10% of the book to really get started, and then he makes his central point about 40% of the way through the book. Once you start, keep going! You won't regret it.