After some sifting of the clues, I can now tell folks how to search for and choose ebooks and eaudiobooks, how to download those books from the library for free and get them transferred to their machines--desktops, laptops, tablets, smart phones, and dedicated ereaders.
Another successful solution, which like current / contemporary mysteries being written, has nuanced complexities. But usually, I'm able to help library patrons get past the fact that "there are no friendly machines."
