I'm halfway through the audiobook of Lyn Alden's Broken Money and it's really good so far. What I appreciate most is that she goes into the details of working on the financial system, down to a low level. Most descriptions I've read were too abstract, she shows how do the books of FED, treasury, banks, etc look, exactly.
This part is actually from her blog here:
I also like that she describes the current system in terms of combined petrodollar and eurodollar system, which is important to understand.