Wikipedia is an encyclopedia on go for people like us. It operates on website as well as application. Whatever we wish to know, whenever we wish to know, the only thing we have to do is to search the thing on wikipedia. Wikipedia is perhaps the greatest and largest knowledge bank assembled in the history of mankind as per my views.
From persons to places to science, it literally has the world in it. We just have to search for a thing and we get detailed info about it. Most interesting thing is we can help update the facts if they are stated wrong by requesting an edit on the page.
I have been hugely dependent on wikipedia for much info needed and it has always helped me.