I use the
Manage option for each section in the Tag Browser and good old Eyeball Mk I.
The advantage is I can check NOW, what books are associated with that tag.
Especially with Series, Duplicates or Singles (books ONLY have the same Series name), the Manage Series PI helps (I add the Authors initials in paren to a series to break a tie: Magic (AN)
The only tool I wish it had, is a 'compound Tag splitter' (takes the Tag and allows commas to be inserted which makes that into the multiple tags)
OK another tool
: Hierarchical flipper. (I don't type well, so any help
is good)
Hardboiled Detective I add the dot (Hardboiled.Detective) then flip -> Detective.Hardboiled