Bookman is a simple manager for books.
Bookman uses a convention to generate books file names. It integrates with Google Books API to fetch information for a book and it generates a bookman formatted file name.
Combined with fzf it's easy to find books.
The bookname fileconvention is as follows:
[tag1][tag2]Author-One,Author-Two_Book-Title(2000)_ISBN.pdf
Tags can be used by bookman to open all books with a given tag, for instance.