Fortunately, I picked up the K+R book after I was an experienced PDP-11 assembler programmer. I had never heard of C before, and basically just flipped through the pages and instantly got it. I quit all the other languages then, too, and switched to C.
To be fair though that's just an extremely well put together book. It's exceptional.
I happen to have the Second Editions of both Kernighan & Ritchie and of Stroustrup's much more long-winded book about his language sitting near this PC.
Even without looking at the actual material the indices give the game away. If I am wondering about a concept in K&R and can't instantly find it from memory, the index will take me straight there. Contrast Stroustrup where the index may lack an entry for an important topic (presumably it was in great part or entirely machine generated and the machine has no idea what a "topic" is, it's just matching words) or there may be a reference but it's for the wrong page (the perils of not-so-bright automatic index generation) and so the reader must laboriously do the index's job for it.
Now, today that's not such a big deal, I have electronic copies of reference works and so I have search but these aren't books from 2022, Stroustrup wrote his book in 1991 and the 2nd edition of K&R is a little older. This mattered when they were written, and when I first owned them. K&R is a much better book than almost any other on the topic.
The book, I would argue, actually holds up much better in 2022 than the language.