Instead of "Libre Office" (10 times), the chapter should say "LibreOffice" because that's the official name of the software according to its official website, Wikipedia says "LibreOffice" as well.
I think that section 13.3 should be extended, at least to mention all the desktop environments suggested by Debian during the installation (see image from 4.2.17). I suggest to make 13.3.3 only about Xfce and create section 13.3.4 about other desktop environments. There are also other desktop environments that can be installed apart from the ones mentioned in 4.2.27, like Budgie and Enlightenment (if you want to mention those, they should only be named, since they are not very popular).
I don't like to spell Nvidia in upper-case (NVIDIA), it looks as if it was an acronym, when it's not, it's only a marketing stylization. I'd rename it to Nvidia, the same way that Wikipedia and many other websites spell it.
Well, I have no problem respecting the uppercase for NVIDIA, exactly like we uppercase GNOME because they request it (even if it started as an acronym, it's just a name really).