The most common answer in response to any question about how anything works is "Google it!". But sometimes, googling it does not always get the precise results you want. So then you turn to Wikipedia, but even that's not always a great help. Sometimes, you need to know precisely when something was invented or the precise workings of some device or system, or look up a rare religion, but it's a very obscure detail that's not easily found on Wikipedia or anywhere on the web. (Also, in some cases, some of us want to google the answer to something but are afraid in the back of our minds this could result in the FBI knocking at our door for a friendly visit

) Is there a way anyone can provide a, or several, research resources that provides details for really obscure details? Wikipedia is one of them, but we're talking about really tiny, obscure details that even Wikipedia probably wouldn't know everything about (plus, there's the whole thing about how it can be edited by anyone, so...). Like when microwavable popcorn was invented, or the properties of shoelaces, or littler-known religions, or...pretty much anything obscure.
Off the top of my head, at least for the "googling details on stuff that would get the FBI at your door" thing, I do recall this tumblr page that's dedicated specifically to details in crime investigation and forensics, but I forget which one. I also recall some tumblr pages dedicated to writing also provided similar resources.
(I know some people are going to say this, and I agree with them, so I'll just say this: For the record, as a general piece of advice, if you want to know how something works but can't find the right resources that give you the precise answers for it, just BS your way through it--the average reader probably wouldn't know what goes into the production of making shoelaces or the inner workings of a door lock and you could get away with it, and I'm sure most people on here would agree with me on this; this is just if you want to absolutely double-check the details to make sure you're right about something, or if, in the case of the obscure religions thing, you want to be respectful and not come off as someone relying on lazy stereotypes)