Amy Johnson Crow has been sharing on her Generations Cafe Facebook Group a prompt each day for May. They are based off of her book 31 Days to Better Genealogy that you can buy on Amazon (shown below).
Day 14 of 31 Days to Better Genealogy is: Explore Genealogy Societies. Amy talked about how genealogy society websites will often have information available for free on their websites if you can afford to join them.
Here are a few links to the FamilySearch Wiki articles of different societies located within certain states: