I used Google Search for all of the above and would usually find what I needed in the first few hits -- which would lead to the appropriate doc page or an example page or a page on SO, etc.

So it's not like CoPilot is giving me information that I couldn't get fairly easily before. But it is giving it to me much __faster__ than I could access it before. I liken it to an IDE tool that allows you to look up API methods as you type. Or being able to ask an expert in that particular language/domain, except it's not as good as the expert because if the expert doesn't know something they're not going to make it up, they'll say "don't know".

So how much benefit you get from it is relative to how much you have to look up stuff that you don't know.