They really are tiny things! I've got a ton of of chickadees as well, and they're maybe half this guy's size.
I've been into bird watching for probably 6 or 7 years now. It started by accident after we hung some feeders up in our old yard. We'd sit outside after working in the yard and garden and I realized just how many different birds visited, and I started learning more.
We moved several years ago to a place on some peppery and surrounded by woods. It's in the same state, but it's amazing how many different birds we have here.