Vancouver Degrowth series by William Rees is an intro for those not already aware of the concept. We've covered it before but this one seems worth a look.
btw, on my recent trip to the states I shopped at a co-op grocery, stayed in a co-op Gunilla and I bought 25 years ago, and still use only a credit union (aka a co-op bank). Co-ops are key to some degrowth concepts, sustainability without growth. President Bernie might support a tax credit for co-ops , they are small businesses and eco-friendly.