@rs1linuxtools In dial-up era it was the easiest way to get a CD with some distro 🤷🏿
I think I've also had a printed copy of Linux NAG (Network Administrator's Guide). Oh, and some Kernel Internals book from kernel 2.0 times.
I still prefer reading printed books, but back in the day reading stuff online using a smartphone wasn't even a viable option option, screens were small and… bad. Linux book was a great way to entertain yourself when using public transportation or smth.