Taxes in France for US Citizens

Where is the best place to go to research taxes in France? We are retired in the US and need information. Thank you. Merci beaucoup.

I am an American citizen, retired to France a few years ago. I have no obligation to pay taxes on my Social Security and my retirements benefits from US government in accordance to an agreement signed by US with many countries around the world. You owe taxes to France on any income from private pensions, private investments - anything that is not paid with US public money. If you do not keep your private investments in France or Europe, there is very little chance they will eve find our about that.
Hope it helps
Greg

Thank you.

The best source is the USA-France tax treaty (easy to find via Google). It can be hard slogging, but it's definitive.