@csdad2 Sometimes you can find videos on youtube both official and unofficial. For example, kind of in your neck of the woods, Lawrence University has a whole range of great videos.
Also, either look on the college websites or contact the colleges directly to see if a rep will be in your area for college fairs - a good way to show interest and ask questions.
I agree its much better to visit when college is in session. Depending on when your son’s school starts in August/September, you might be able to squeeze in some visits to colleges that start up before the high school academic year begins. My kids started after Labor Day so late August was a good time to look at more colleges. Good luck with the process! it sounds like you’ve had a great, informed start.