|
Open Calibre, and make sure the column headed 'Tags' is showing (if it isn't, right-click on the headings row, go down to 'show column' and choose it). Then select a bunch of books that will be in the same category, right-click anywhere in the 'Tags' column, then go to 'Edit Metadata' -> 'Edit Metadate in bulk' and in the box marked 'Add tags' put whatever tags you want to use.
|