I don't know if I'm doing it right yet, but I'm using (ie I have created) a BibTeX database of the stuff that I'm reading, and noting both when I'm reading each item (eg via a urldate entry) but also using the annote record to pull out the salient features.

(I've never been happy with my managing of references before, and as a shiny new university doctoral researcher I though that I'd have another go...)

https://www.earth.org.uk/bibliography.html