A great way to learn the basics. It’ll be old, but that’s ok. It’s going to cover all the shell basics and then more. It’s still going to be useful, it’ll cost you pennies, you’ll be able to dip into it when you want, and you’ll be giving to a good cause.
I have an old Fedora book which still has a Fedora 15 disk in it! Helped me realize on old PC’s to burn the ISO onto a DVD for installation instead of finding a work around for not having a USB boot option in the BIOS.