[tomsem]

In Author sort, titles for the author appear in alphabetical order. Articles like ‘The’ and ‘A’ or ‘Los’ (Spanish) are ignored. So ‘This Will...’ sorts before ‘The Universe...’. Just like how card catalogs were sorted in libraries. I did not see any randomness to it with several of the examples in my library.

To find things, I just use Search. In previous versions of Fire OS, you could press microphone on the keyboard and it would do speech to text, so you didn’t have to type. But that went away. Of course that is still an option with the iOS and Android apps.

Unfortunately there is no way to engage the scroll indicator to more quickly jump around in the sorted list of books. The iOS app (Android too I assume) has an alphabetical index on the right side so you can jump to a given letter for Author or Title sort; they should add that for Fire. In Recent order (the one I use most) they are all deficient in navigating a long list, but then the order is essentially random so it would not be that useful.