John Milton Reading Room
https://milton.host.dartmouth.edu/reading_room/contents/text.shtml
This website hosts all the prose and poetry of John Milton in an accessible and engaging fashion.
Krzysztof Penderecki: Paradise Lost
https://www.youtube.com/watch?v=-5kUWn3HqXw
There are very few straightforward adaptations of Paradise Lost into other media, but one of the most successful to date has been the Polish composer Krzysztof Penderecki's imaginative opera of the same name. A fully televised performance of the opera can be watched here at this link.