My comic is taking place in Canada and I sure as hell know so little about the country For now it is just an unnamed summer camp and I hope there are mixed forests somewhere in Canada! It will be harder with towns, even though I won't place characters in actual real towns...
The cultural exchange thread here on Tapas is great, actually, and I think you can make a thread asking US folks here about things you have questions on? Well, I think I am going to actually do it, if I have some questions after studying everything I will find.
It is actually better to read facts not only about the country, but more specific place, i.e. state, city, etc. But you should also look for minor things, like slang, maybe even typical food and other details, which are specific to the place or people from that place, if you want to put them in the comic