- For "disposable" books, cut the spine and haul the paper through a sheet-feeding scanner; - For non-disposable books, photograph each page;
Which is near impossible to do for a serious collection: scanning 10 books a day, every day, is only about 3500 books.
There are companies that will do the work for you, including meta data, but it will cost a small fortune.
Perhaps best to think about why you want to make copies.
Ideally it would also make it easy to give names for folders and subfolders.
(no affiliation - have had them recommended on a couple subs on reddit)