My interests come out of researching data for my family tree. A lot of these links will take you to free books that are online. Others will take you to Web Sites that are studies on DNA, like Gary Felix's page. That's a good example of a descent forum that serves a good purpose.
I have also provided a link that will take you to a global incident map. Considering what is happening in this world today in regard to terrorism one should keep abreast of hot spots that haven't been written about in the news or TV.
The rest are interesting places like the Home Stead House.
Ayes
https://www.fullbooks.com/The-History-of-Puerto-Rico.html
https://members.tripod.com/~GaryFelix/HCwill.htm
https://www.globalincidentmap.com/home.php
https://www.bitlaw.com/copyright/license.html
https://digitalcollections.fiu.edu/tequesta/files/1967/67_1_04.pdf
https://www.homesteadpalace.com/wst_page4.html