I have varied and sometimes odd interests.
I have been interested in word meanings, word origins, word frequency lists, and reading difficulty levels for a fairly long time. I used to get this information from printed dictionaries and library books; now those books, and more, are available on line.
Google
Ngram,
Google Translate, and just plain Google.
Of course Amazon is a wonderful thing and I go there regularly. It is the Home Shopping Network for people who wouldn't get caught dead watching the Home Shopping Network cable channels.
I like the way Consumer Reports goes about testing and rating various products. Inquiring minds want to know whether there are any frozen dessert product brands that approach Ben and Jerry's in quality, aside from Hagen Daz. (Some haute cuisine local brands meet or exceed B & J's achievements.) The curious but impecunious still want to know whether you can get a good cashmere sweater for $125, even though they will never buy one. I like their sensory panel reports on various food products: "stale flavor notes and cardboard overtones".
The Minnesota Historical Society's Visual Data Base has been wonderful. It's a large (>60% on line) photo collection which one can search and view.
The Army Corp of Engineers provided me with critical information for a project I was pursuing. I wanted to know how long a large sandbar along the Mississippi River in Minneapolis
could have been a gay cruising area. While the ACE didn't happen to know anything about the cruising, they gave me a topo map and some historical information from which I determined the answer: Definitively not before 1907 when the Meeker Island dam was built on the Mississippi in Minneapolis and probably not before 1940, when heavy barge traffic would have required regular dredging to main the channel. The "sand bar" is actually just sand from dredging operations piled up on a rocky shore area.
So... sometime between 1940 and 1960.
Google Street view is an amazing piece of technology.
Ordinary people can turn out to be fonts of esoteric knowledge. When I was working on AIDS transmission interventions in the 1980s, i needed to find out about where the busy glory holes were (technically, glory holes are the openings in glass refractories through which blobs of glass are removed to be blown into shapes and given fancy treatments). The kind of glory holes I needed facts about involved blowing something other than molten glass.
After pursuing a short list of leads, I found a guy who worked at the University of Minnesota in a professional capacity who was a regular at GH locations and was a very enthusiastic (and accurate, it turned out) informant. Who knew that a University hospital employee possessed systematized information about cock sucking in various university buildings?
Over the last 30+ years, the New York Times has been a steady source of science information. I feel like I completed a general science course or two just by reading their Science Section for all these years. NOVA and NATURE on PBS, along with a scattering of several-hour specials, has also contributed a college course worth of general science knowledge. One of the great things about science on print and television media, is that it's usually quite serendipitous.