

Nuclear option: delete all existing tags: > Screenshots for all steps and actions as a single page (For those with techno-fear: deleting tags only removes those tags from the Calibre database it does not delete your books.) To manage this, you have two choices: start completely fresh or edit/delete the existing ones. When you import a book, Calibre will automatically add any subjects it finds into the Tags column, so even if you've never chosen to add tags yourself, you probably have tens (or hundreds) of tags already. Tags are often embedded in the metadata of the books themselves via the field which exists in both ePub and AZW formats. The quickest way to create your own collections is by using the built-in Tags column which is present in every library you create in Calibre. This also allows you to create collections on your Kobo.

One of the most powerful features of Calibre is that it allows you to slice, dice and display your library in various ways by assigning metadata to each book.
