@
Kevin1a - firstly, welcome to mobileread
What many of us have is a separate 'intake' library into which we add books in manageable 'batches'. When we've updated the metadata for a 'batch' we copy the books from the "intake" library to the "main" library - there is a tool to copy books in the book list context menu, you can also add it to a toolbar if you prefer.
The
Find Duplicates optional plugin has a
Find library duplicates feature that can used to resolve duplicates before copying
Another strategy, is to insert a tag using the setting in Preferences->Add Books - e.g.
!newbook - and then create a Virtual Library of books with that tag.
BR