It's a really nice project. Overall I found it quite easy to use, but I think you could improve the distinction between creating new BookBoxs and updating Book

It's a really nice project. Overall I found it quite easy to use, but I think you could improve the distinction between creating new BookBoxs and updating BookBoxs. Perhaps only showing one of the password options based on where you came from or what your last action was would be a good start. As everyone else said, there is loads of scope for expansion which is great.