I have over 500 eBooks on AI and currently have them all in my apple Books repository, but I can’t catalogue them in Books as its very rigid.
Also I don’t want to give the family access to my entire Books library.
I want to give my family acess to these, but can’t publish them on the web as that would be copyright breach.
I know I can put them all individually on a WordPress site and mark them private, but that assumes I have the time to individually upload to a wordpress site, separately upload the cover and upload a description –
I could give them a stick with the books on, but I’d rather have a private digital library like Apple’s Books
Any ideas for a better way?

See what’s missing in libgen or zlib and share it. Most of it might be already available.
Just an idea.