Federalist Papers Summary
https://www.britannica.com/topic/Federalist-papers
The Encyclopedia Britannica's page on The Federalist Papers offers a concise summary of the events and ideas behind the essays, as well as offering an example of how at least one of the Papers refuted then-popular wisdom.
Federalist Papers: Primary Documents in American History
https://guides.loc.gov/federalist-papers/digital-resources
The Library of Congress's website not only contains a full digitized copy of The Federalist Papers, but also multiple other digitized resources as well. These range from documents presented at the Constitutional Convention to the personal papers of George Washington,...