My insurer, GEICO, gives me a discount if I take an on-line safety course every 3 years. The price dropped from $20 in 2018 to $12.50 this year. I like National’s better than American’s: it’s higher-quality production and they let me take it at my own pace; American decrees that you have to spend all 8 hours; I need about half that.
I learned 2 new things (in the realm of the course, not necessarily the real world): though no one has the right-of-way, you can be cited for failing to yield it. As I discussed on this forum probably 9 years ago, back then they just said no one has it. There’s no practical distinction, but I noticed.
The advice on adjusting the side-view mirror is to lean your head against the window, adjust it until you can’t see the side of your car (they have an electric mirror) - probably not different from the result I get with my method but perhaps easier to follow, possibly because they assume electric mirrors.