There are lots of books on the Federal Reserve. Just be careful of the source. There are some far fetched and largely unproven conspiracy theories out there, which are basically just fairytales with a possibility of truth to them, because they can't be proven wrong either. Kind of like unicorns. You can't prove they don't exist.
College text books make great sources. Read them and fill in the blanks. IE, where does the money come from, where does it go etc etc. Somebody has to be in charge and whoever it is wants to keep it that way.
A few titles slightly off topic but interesting none the less I enjoyed are
1) Rome Wasn't Burnt in a Day by Joe Scarborough,
-a middle finger to the career politicians and power elites from an inside source. Joe was a member of congress. It's about gov't spending, pork barrel bills etc., funding which ultimately comes from the federal reserve and then is taxed on the american people. I bet you didn't know you were being taxed for research on alternative salmon products or cricket research did you?
2) Confessions of an Economic Hitman by John Perkins I believe.
- John was a high powered economist sent over seas to convince gov'ts in underdeveloped countries to allow american oil and infrastructure companies to set up operations. He uses faulty statisitics and forecasts on purpose, gets the contracts signed that are backed by the US and our allies militaries and then the bill to the countries for the built infrastructure is inflated grossly, forever indebting the country to the US as a sort of tax really though it looks like a business transaction.
Wars start over this. Civil wars, rebellions we step in to "control" etc. hence the Hitman title for the economist. Supposedly he has tried to publish his book for years but has been thwarted by publishers dropping it at the last second, death threats etc etc. He doesn't list specific names but the story sounds a lot like that of Halliburton, J. Ray McDermott, Jacobs Engineering etc.
A very subjective (with a lack of real names and consequently facts listed) but interesting read.