Thanks! So looking here: https://www.mobileread.com/forums/showthread.php?t=17914
it sounds like I should download the HTML version of the books to get started? I am currently downloading and will have to convert from home. Mostly art history books (I am looking for some things for my students) but I don't have to have the pictures intact.
One other thing - do you know if the converting software works on a mac?
I am still reading... haven't found it yet.