I‘ve listened to a couple of McWhorter‘s Great Courses lectures on language and he‘s always informative and entertaining; like a a nerdy dad—smart but not exactly PC.
The book itself is a collection of theses about the origins of English. Tons of fascinating info but his arguments probably won‘t mean much to someone who isn‘t in or near his field. For me, I have found that I really enjoy things like etymology and other language-related topics.