Re: "And bluetooth with Win10 is an iffy affair"
Another good book pass on to the youngster is O'Reilly's "UNIX Power Tools".
Got that one somewhere as well. Coherent brings back memories albeit only of reading about it in Byte. However, there's a limit to what one can present a 10 year old with.
However, mention of Byte reminds me it might be a good idea to find my copy of the issue on RDBMS from which I learned pretty well everything I know about database design* apart, of course, from what I picked up by actually doing it for a few decades.
*I've encountered at least one CS graduate who knew less than that Byte covered.