Karting version of clickbait in my book. Their detailed explanation of caster camber amounted to diagrams to explain the idea. Nothing to the how or why. So unless you’ve yet to make any front end adjustment, it’s a total waste.
It is a magazine. I have subscribed since the first of the year and read each edition. Some interesting articles, lots of advertising. Most news and articles are from Europe with some coverage of US events. There is nothing earth shattering in the magazine, or is there in any magazine today. Bottom line is your the only one who can determine if it is worth purchasing for yourself.